System and method for ensuring secure transfer of a document from a client of a network to a printer

ABSTRACT

The present invention relates to a system and method for ensuring secure transfer of a document from a client of a network to a printer. That is providing a system and method enabling safe printing of a print job by securing a transmission of the print job through a network to a printer and only releasing the print job to a user designated by a client of the system and method to access the print job. Further, the present invention provides a system and method for distributing a document to a plurality of users while maintaining a secure transfer of information from the transmitting client to the plurality of users. Additionally, the present invention provides a system and method performing controlled discriminatory user access to a printer connected in a network by identifying users at the printer.

Priority from, and the benefit of, U.S. Provisional Application No. 60/178,712, filed Jan. 28, 2000, is hereby claimed.

The invention relates to a printing control system and a printing control method for ensuring secure transfer of documents from a client connected to a network such as a local area network (LAN) or a wide area network (WAN) to a user who is allowed access to the documents from a printing communication unit connected to a printer. The printing control system and printing control method provides means for a client station to designate a document to a single user or a group of users and provides the possibility for the single user or the group of users to access the document at a plurality of printer communication units.

The state of the art provides several techniques for enabling a client the opportunity to share documents and directories with other clients connected to a network. Thus the state of the art provides other clients connected to a network to access a document and perform printing of the document either locally or at any printer accessible through the network. However, the state of the art fails to perform a secure transfer of the documents provided by the sharing client since the documents may be printed at any printer connected to the network and at any time according to the selected printer's job queue. Hence the user of the network may transmit a shared document as a print job to the printer's job queue without knowing when the printer actually prints the shared document and consequently the shared document may lay open to inspection by anybody at the printer.

In sharing a document or directory in the state of the art network system, the client sharing a document or directory may determine which clients of the network are allowed access to the shared document or shared directory. The state of the art network system, however, does not inform the sharing client which client or clients in the network have actually accessed the shared document or directory. Neither does the state of the art network system provide billing of the accessing clients when the shared document is opened or printed. Generally the state of the art network system provides the opportunity to share documents with designated users or clients of the network system without providing client's access times, clients accessing the shared document and accounting information to the sharing client.

A method and apparatus for managing remotely located document producing machines by using cellular radios is described in U.S. Pat. No. 5,787,149 hereby incorporated by reference in the patent specification. The US patent discloses an apparatus for managing a series of document producing machines such as printers, copiers or faxing machines by recording and transmitting use of the machines to a managing unit so as to provide a vendor leasing the machines to lessees with a picture of how much the machines are used. The vendor may then utilise the information transmitted from the machines to bill the lessees according to the lessees' use. The apparatus described in U.S. Pat. No. 5,787,149 provides billing of a lessee in accordance with use of a leased document producing machine, however, the apparatus does not provide means for billing separate users having access to the leased document producing machine for producing prints of documents on the leased document producing machine.

An object of the present invention is to provide a system and method enabling safe printing of a print job by securing a transmission of the print job through a network to a printer and only releasing the print job to a user designated by a client of the system and method to access the print job.

A further object of the invention is to provide a system and method for distributing a document to a plurality of users while maintaining a secure transfer of information from the transmitting client to the plurality of users.

A particular advantage of the present invention is the provision in the system and the method of controlled discriminatory user access to a printer connected in a network by identifying users at the printer.

A particular feature of the present invention is the provision in the system and the method of an account or credit for each user so that the each user is allowed printing operations at the printing in accordance with user credit.

The above object, advantage and feature together with numerous other objects, advantages and features which will become evident from the below detailed description of a preferred embodiment of the present invention is according to a first aspect of the present invention obtained by printing control system for ensuring one or more users of a network (such as a LAN: local area network, or a WAN: wide area network) secure access to a print job designated to said one or more users of said network, and said printing control system comprising:

-   -   (a) a client station of a first plurality of client stations for         designating said print job to said one or more users, said print         job defining a document containing user readable information and         defining a header containing document access information,     -   (b) a spool connected to said client station for spooling of         said document and substituting said document in said print job         with a spooled document,     -   (c) a job database connected to said spool for receiving said         spooled document and said header from said client station, said         job database defining a document table and a user table and         storing said spooled document in said document table and storing         said header in said user table,     -   (d) a printer communication unit of a second plurality of         printer communication units for receiving user identifying data         input by said one or more users to said printer communication         unit,     -   (e) a server managed by a network administrator and         interconnecting said printer communication unit to said job         database for establishing said one or more users in said user         table enabling said one or more users access to said network,         for validating said one or more users on the basis of said user         identifying data input to said printer communication unit         against user information stored in said user table, and for         ensuring said user identifying data and said user information         provide said one or more users access to said spooled document,     -   (f) a printer connected to said printer communication unit for         receiving said spooled document from said job database and         having a request input for receiving a print request from said         one or more users and communicating said print request to said         server, and     -   (g) a print engine interconnecting said job database and said         printer communication unit for compiling of said spooled         document to be communicated to said printer through said printer         communication unit, said print engine receiving said spooled         document from said document table in said job database.

According to the basic realisation of the first aspect of the present invention the printing control system enables a plurality of client stations to designate a data file or document to a plurality of users accessing the printing control system by identifying themselves at any printer connected to the network. Thus providing a secure transfer of the data file or document designated to one user or a plurality of users from any of the client stations connected to the network by determining the identity of each user requesting a print of the data file or document. The transfer is further secured by encrypting the document before transferring the document through the network by utilising either a public encryption key or private encryption key.

The term one or more users as applied in this context should be construed as an individual user, a population of users, a plurality of users, a multiplicity of users or group of users, or an individual user in the said population of users.

The one or more users of the printing control system do not necessarily have to be provided with or have access to an individual client station, since the one or more users may simply have access to the print jobs display at the printer communication unit but access to designate print jobs. The printing control system may therefor ideally be utilised for distributing information such as working schedules, tasks or any other type of information to employees having no access to an individual client station in the network but entirely access to the printer communication unit. This may be employees such as machining tool operators, medical personal, sales assistance or chauffeurs not needing a personal computer or the like for performing their daily work. These employees may collect their daily tasks from a printer communication unit positioned at any location accessible to the employees.

The secure transfer of the document and further communication between elements of the printing control system is provided on the network is established by bus connections, by cable connections such as current carrying cables and/or optical cables, by wireless links such as mobile radio transmission links, infra-red transmission links or ultra-sonic transmission links, or by any combination thereof. By utilising bus connections between some or all elements of the printing control system a particular fast communication is achieved. However, generally communication between elements of the printing control system is performed on a wide variety of connections thus providing a very dynamic communication system.

Utilising mobile radio transmission links as for providing at least part of the network communication ensures a printing control system of great versatility, since the printing control system as such become mobile and client station may access the network from any position within range of a mobile radio transmitter station.

The communications between elements of the first aspect of the present invention comprises control signalling and document transfer. The document is constituted by a file configured in any binary format such as text format, comma or space separated variable format, or any user or software-defined format. By employing a printing control system accepting any binary file format provides a great advantage since it enables communication between two otherwise non-compatible systems is achieved. The header contains information such as information regarding data stream format such as PostScript, PDF, IPDS, PCL, PCLXL or AFP format, print formats such as simplex, duplex, colour, page size, page rotation, tray, stapling, number of pages of the spooled document, access for said one or more users to said spooled document, a digital client signature, duration in which the one or more users are allowed access to the spooled document, and number of pages defined by the spooled document or any combination thereof. The header ensures that the user table is updated with relevant information regarding which users are allowed access to the spooled document.

Further in accordance with the first aspect of the present invention each of the first plurality of client stations comprise a local memory, a display, a keyboard and preferably a local central processing unit such as constituted by personal computers, computer workstations and/or such as constituted by mobile communication clients like mobile phones or mobile communicators or any combinations thereof. Generally the first aspect of the present invention may be established incorporating a wide variety of client station types thus ensuring communication and transfer between various client types.

The spool provided for in the first aspect of the present invention performs spooling of the document according to a data stream format such as to PostScript, PDF, IPDS, PCL, PCLXL or AFP format. The printing control system allows for any data stream format to be utilised, hence ensuring further that generally a wide variety of printer types may be connected to the printing control system.

The printing control system establishes a secure network by utilising secure networking procedures providing symmetrical and/or asymmetrical encryption in accordance with public and/or private encryption keys. The encryption provided by the spool enhances security of the transmission between client stations connected in the network.

Additionally, the spool incorporates a port monitor for parsing the spooled document in order to determine data stream format such as PostScript, PDF, IPDS, PCL, PCLXL or AFP format, and further to determine print formats such as simplex, duplex, colour, page size, page rotation, tray, stapling, and number of pages the spooled document will constitute during printing of said spooled document. The page count is utilised for determining the price for performing a print of the spooled document at any printer connected to the network.

Further, in accordance with the first aspect of the present invention the job database is established on a memory storage unit accessible by the server such as magnetic storable hard disk, magnetic storable tape and/or magneto-optic storage disks on the server having the user table and the document table allocated in storage spaces on the memory storage unit. Further, the user table allocates a record space in the memory storage unit for the header, and the document table allocates a storage space in the memory storage unit for the spooled document. Alternatively, the user table allocates a record space in the memory storage unit for the header, and the document table allocates a storage space in the memory storage unit for a pointer to the spooled document on the local memory of the client station or in the document table. It is further possible to implement the server incorporating the spool, the job database and the print engine in a server memory. Thus providing a system which may utilised a bus hence significantly increasing processing and transmission times between elements of the present invention.

Any of alternative the above mentioned types of storage media may serve as a memory storage unit, hence the first aspect of the present invention ensures compatibility between new and older communication systems and additionally, provides a choice of storage media in accordance with the necessary capacity of the printing control system.

The printer communication unit according to the first aspect of the present invention comprises a front-end module for identifying the one or more users of the network and a control unit for providing an interface for the print engine and the server to the printer. In order to accomplish communication between the user and the printer communication unit the front-end module comprises a display for showing the user accessible print jobs and operations menus, and comprises a keypad for providing an interface between the user and the front-end.

The display according to the first aspect of the present invention utilises cathode-ray tube screen techniques or the display utilises liquid crystal display techniques. Either type of display provide high resolution clear visual graphic interfaces for the user. The keypad is constituted by a general personal computer keyboard, a numerical keypad or a functional keypad or constituted by a touch sensitive film mounted on the display so as to allow the user to perform user operations by pressing the touch sensitive film in accordance with information showed on the display. Utilising a touch screen further enhances the graphics interface between the user and the printer communication unit.

The front-end module according to the first aspect of the present invention comprises a iris scanner, a fingerprint reader for identifying the one or more users at the front-end module and/or preferably a card reader for reading card information from a card such as a credit card, a library card, a health insurance card, a driving licence card, a passport card, a membership card, a company identity card or an institutional identity card. The card information includes information such as card user name, card user ID, card user credit, card user's access rights, card user's server address, card user identifying number, card issuing date, card identity number, digital signature of one or more of said client station of said first plurality of client stations or any combination thereof. The card reader receives card information from the card and communicates the card information to the server. The front-end module requests a first user pin code.

Further, in accordance with the first aspect of the present invention the card utilises electronic storage techniques, electro-magnetic storage techniques, magnetic storage techniques, magneto-optic storage techniques, optic storage techniques or any combinations thereof for storing of the card information.

The user identifying data includes the card information and the first user pin code and the user information stored in the user table includes system user name, system user ID, system user credit, system user's access rights, system user's server address, system user identifying number, system user PUK code (personal user key), system user initiation date or any combination thereof, and a second user pin code. The control unit transmits upon receipt of the first pin code the user identifying data to the server for verification. This transmission is accomplished by the control unit communicating with the front-end module and the printer through a parallel connection, a serial connection, a local area network (LAN) connection, a wireless connection such as a mobile radio transmission connection, an infra-red transmission connection or an ultra-sonic transmission connection, or any combination thereof.

The user identifying data includes the card information and a first user pin code and the user information stored in the user table includes system user name, system user ID, system user credit, system user's access rights, system user's server address, system user identifying number, system user PUK code, system user initiation date or any combination thereof, and a second user pin code. The server establishes and validates the one or more users by identifying the user information in the user table on the basis of the user identifying data and by matching the first pin code with the second pin code. Alternatively, during first use of the card by matching the system user PUK code with an entered user PUK code and the server locating in the document table all print jobs designated for the one or more users and communicating titles of all print jobs designated for the one or more users to said front-end display enabling the one or more users to select a print job or a multiplicity of print jobs.

Hence the server performs the verification of user identifying data by comparing the first pin code transmitted from the control unit with the second pin code attached to the user information stored in said user table. Furthermore, the server locates in the user table all print jobs designated for the user and communicates titles of all print jobs designated for the user to the front-end display enabling the user to select a print job. When the server has verified the user then the user may select any of the listed available print jobs and perform various operations on the available print jobs.

As the server receives a print job selection from the one or more users at the front-end module and the server provides the one or more users access to the spooled document in the document table in the job database upon validation of the user identifying data.

Subsequently the server provides an opportunity for the one or more users to delete the spooled document from the one or more users' print job list, determine desired number of copies required of the spooled document, retain printing of the spooled document in a draft version for a first price, view the spooled document on the display for a second price, print the spooled document on the printer for a third price and terminate further operations on the front-end module. The price of these optional operations allowed the user at the printer communication unit might be determined in accordance with various criteria. For example the price for printing of the spooled document may be different for each user depending on number of copies taken of the spooled document or depending on who the author of the particular spooled document is. Further the price might be based on the relative to for example artists royalty fees such as for example Koda-Gramex fees.

The server deducts the credit of the one or more users of a first amount equal to the first price if the one or more users prints a draft version of the spooled document, a second amount equal to the second price if the one or more users views the spooled document and a third amount equal to the third price if the one or more users prints the spooled document or the server establishes a client credit record for each of the client stations designating the one or more users and deducts the client credit record of a first amount equal to the first price if the one or more users prints a draft version of the spooled document, a second amount equal to the second price if the one or more users views the spooled document and a third amount equal to the third price if the one or more users prints the spooled document. Thus the client station designating a particular print job to a group of the one or more users of the network will be charged in accordance with the document type and in accordance with how many of the designated user prints the print job. For example a bookstore may have access to a printing control system through a printer communication unit and each time the bookstore wishes to sell a copy of a document designated to that book store the book store may perform a print job. Subsequently the bookstore will be charged either daily, weekly, monthly or yearly for the number of copies the bookstore has performed of the print job. The bookstore or generally users are provided with a wide range of options of operations allowing the users to select at wide variety of operations, which accordingly will be debited the users upon termination of operations. The printer communication unit may obviously be constituted by a personal computer, a work station, a mobile communicator or a mobile phone.

The above object, advantage and feature together with numerous other objects, advantages and features which will become evident from the below detailed description of a preferred embodiment of the present invention is according to a second aspect of the present invention obtained by a printing control method for ensuring one or more users of a network (such as a LAN: local area network, or a WAN: wide area network) secure access to a print job designated to said one or more users of said network, and said printing control system comprising:

-   -   (a) designating said print job defining a document containing         user readable information and defining a header containing         document access information to said one or more users by means         of a client station of a first plurality of client stations,     -   (b) spooling of said document and substituting said document in         said print job with a spooled document by means of a spool         connected to said first plurality of client stations,     -   (c) receiving said spooled document and said header from said         client station at a job database connected to said spool,         defining a document table and a user table in said job database         and storing said spooled document in said document table and         storing said header in said user table,     -   (d) receiving user identifying data input by said one or more         users to a printer communication unit of a second plurality of         printer communication units,     -   (e) establishing said one or more users in said user table         enabling said one or more users access to said network,         validating said one or more users on the basis of said user         identifying data input to said printer communication unit         against user information stored in said user table, and ensuring         said user identifying data and said user information provide         said one or more users access to said spooled document by means         of a server managed by a network administrator and         interconnecting said printer communication unit to said job         database,     -   (f) receiving said spooled document from said job database and         having a request input for receiving a print request from said         one or more users at a printer connected to said printer         communication unit and communicating said print request to said         server, and     -   (g) compiling of said spooled document to be communicated to         said printer through said printer communication unit by means of         a print engine interconnecting said job database and said         printer communication unit, receiving said spooled document at         said print engine from said document table in said job database.

The printing control method according to the second aspect of the present invention incorporates above described features, described with reference to the printing control according to the first aspect of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a schematic overview of a prior art communication network enabling remote printing.

FIG. 2 shows a schematic overview of a printing control system enabling exclusive printing from any printer connected to a network.

FIG. 3 shows a principal flow diagram of a method for providing exclusive printing from any printer connected to a network.

FIG. 4 shows a schematic diagram of all modules (excl. a Broadcast server).

FIG. 5 shows a schematic diagram of signaling in situation where a user prints one document, using “print and pay”.

FIG. 6 shows a schematic diagram of signaling of the printing control system.

FIG. 7 shows the dialog box asking client which account to bill a print job to, which dialog box is displayed to the client every time he prints.

DETAILED DESCRIPTION OF THE PRESENT INVENTION

In the following the printing system according to the preferred embodiment of the present invention will be described in detail with reference to the figures listed above.

FIG. 1 shows a schematic example of a prior art communication network designated by numeral 10 in its entirety. The communication network 10 provides communication between individual clients or personal units designated in their entirety by numerals 22, 24 and 26. Each of the individual clients or personal units 22, 24 and 26 comprise a local memory for storing of data files. The communication between the clients 22, 24 and 26 is executed and controlled by a server 12 connected to each of the clients 22, 24 and 26 through connections 16, 18 and 20. Additionally, the server 12 may further be connected to a printer 14 through connection 28.

The server 12 may be configured so as to allow all clients access to the printer 14. Alternatively, the server 12 may be configured so as to allow a specific client of all clients 22, 24 and 26 connected in the communication network 10 access to the printer 14 and additionally simultaneously deny all other clients access to the printer 14. Likewise any particular client, for example the client 22, may be configured to allow any specific or both the clients 24 and 26 access to a specific part of the client's 22 local memory so that both clients 24 and 26 or a specific client is allowed access to data files stored on that the client 22.

FIG. 2 shows schematic overview of a printing control system in accordance with a preferred embodiment of the present invention, which printing control system is designated in its entirety by numeral 100. The printing control system 100 enables any client 102′ of a plurality of clients 120 connected in a local area network (LAN) or a wide area network (WAN) remote printing of data files.

The client 102′ utilises a spool 106 for compiling of a data file in accordance with a particular printing format. The spool 106 receives the data file through a connection 104 between the client 102′ and the spool 106. The client 102′ or the plurality of clients 120 in the preferred embodiment of the present invention may be constituted by a mobile phone 102″ of a plurality of mobile phones or cellular phones to be configured as clients. The mobile phone 102″ transmits the data file through a wireless connection designated by numeral 104′ to a receiving spool 106′. The spooling operation may be performed by any general printer driver facility provided in any operational system such as Linux, Unix System V, Windows or Windows NT or spool systems on AS/400 or S/300 midrange and mainframe respectively. The client 102′ may further perform an encryption of the data file by means of a port monitor running on the client 102′ so as to ensure that the data file is secure and safe against any violation or unintentional disclosure of the contents of the data file to intruders.

The spool 106 establishes a print job by communicating the secured and spooled data file through a connection 108 to a job database 110 comprising a document table 112 and a user table 114. The document table 112 lists a plurality of established print jobs each containing the transferred secured and spooled data file (a print job document) or alternatively containing information regarding position of the secured and spooled data file in the document table 112 or on the local memory of the client 102′. Each record (a print job header) in the user table 114 contains information regarding an encryption key either public or private key, users allowed by the client 102′ to perform the print job or alternatively users disallowed by the client 102′ to perform the print job, and status of the present print job (print job header). The client 102′ may at any time retrieve information from the user table 114 for determining if the data file is printed and in case it has been printed which user has or which users have printed the data file. In the print by reference system the user indicates a memory location of the print job on the local memory of the client 102′ in a LAN or a WAN and as soon as the printing control system 100 identifies and verifies a user the secured and spooled data is decrypted and communicated to a printer 116.

The printer 116 enables printing of the print job document listed in the document table 112. The printer 116 is connected through a printer cable or a network connection 118 to a control unit 120. The printer cable 118 may constitute a serial connection or preferably the printer cable 118 constitutes a parallel connection between the control unit 120 and the printer 116. The control unit 120 is further connected through a link 122 to a front-end module 124, which comprises a display 126, a keyboard 128, a card reader 130 and/or a unit 130′ for scanning irises or reading fingerprints. The display 126 provides guidance to the users and may be implemented by a general cathode-ray tube screen or in the preferred embodiment of the present invention the display 126 is constituted by a liquid crystal display (LCD). The keyboard 128 in combination with the card reader 130 enables any user of the printing control system 100 to identify themselves to the front-end module 124. The keyboard 128 may be any standard personal computer keyboard, a numerical keypad, a function keypad or any combinations thereof. In an alternative embodiment of the present invention a touch screen film mounted on the display 126 may constitute the keyboard 128.

The link 122 between the front-end module 124 and the control unit 120 may be constituted by a parallel connection or in the preferred embodiment of the present invention the link 122 is constituted by a serial connection. In case the front-end module 124 and the control unit 120 are incorporated into the printer 116 an internal bus may constitute the link 122.

Every user of the printing control system 100 has a card 132 for identifying the particular user at the front-end module 124. The card 132 may include information stored there upon by applying magnetically storage, electrically storage or any combinations thereof. In an alternative embodiment of the present invention the card 132 may include information stored there upon by applying optically storage or magneto-optically storage. The information stored on the card 132 may be name of user, password for user, user certificate, total number of print jobs allowed, executed number of print jobs, total number of allowed pages to be printed and total number of printed pages. Further the card 132 may contain information regarding specific access to particular issuers or clients writing to the LAN or WAN. Alternatively, the card 132 may be constituted by a credit card holding information regarding identity of cardholder and financial credit. Means for identifying the user of the printing control system 100 may further be implemented through non-card authentication such as finger print or iris identification.

By presenting the card 132 to the card reader 130 the front-end module 124 may determine the identity of the cardholder and request a pin code from the card holder in order to ensure a match between the cardholder and the certified user of that particular card 132.

The control unit 120 is connected through a connector 134 to a server 136 carrying out requests issued by the control unit 120. The server 136 being connected through a connector 138 further provides an interface between the job database 110 and the control unit 120. The interface ensures that the control unit 120 may communicate with any selected database. The server 136 may be connected to a plurality of control units similar to the control unit 120 either through a LAN or WAN thus enabling printing of a data file to be performed at any control unit connected through the LAN or WAN. Thus a secure and safe transmission of data files between two or more locations is achieved as soon as a user allowed to access the print job has been verified.

When the client 102′ communicates a print job to the job database 110 by transmitting a secured and spooled document to the document table 112 of the job database 110, then the client 102′ additionally communicates a header associated to the secured and spooled document, which header contains information regarding which users have access to perform a print of the secured and spooled document and is transferred to the user table 114.

A user may log on to the printing control system 100 according to the preferred embodiment of the present invention at any front-end module by introducing the user's card 132 into the card reader 130 and entering the user's pin code. The front-end module 124 subsequently verifies the user's identity by checking the pin code. If the pin code is not in accordance with the pin code registered in the server 136 for that particular user, then the display 126 informs the user that access is denied. On the other hand if the pin code is in accordance with the pin code registered in the server 136 for that particular user, then the front-end module 124 requests print jobs from the control unit 120. However, only print jobs, which the particular verified user is allowed to perform. The control unit 120 in turn requests this information from the server 136 checking the user table 114 in the job database 110. The verified user may then view a document list, select to printing of any of the print jobs or viewing any of the print jobs on the display 126, which print jobs are designated to the verified user. In case the verified user selects printing of a print job then the job database 110 communicates the print job through a connection 140 to a print engine 142. The print engine 142 enables the control unit 120 to upload the print job containing an secured and spooled data file through a connection 144 and subsequently enables the control unit 120 to further communicate the secured and spooled data file to the printer 116 so as to complete the print job.

A print log record is kept for each print job in the job database 110. The print log record lists users who have printed or viewed the print job, lists which front-end module 124 and which printer 116 was utilised for each particular user viewing or printing the print job, and lists the time and date for each particular user viewing or printing the print job. A port monitor incorporated in the spool 106 parses the print job document in order to count the number of pages to be printed by the printer. A small postscript application is transmitted to the printer 116 before and after performing printing of the print job thus inquiring the printer 116 before performing the print job and subsequent to performing the print job of the hardware page count. The resultant page count of the print job is then introduced into the print log record. In conjunction with performing a hardware count of printed pages specific user defined billing categories may be introduced in the print log record so as to determine a price for performing the print job. The price may vary as a function of number of pages printed in the print job or in fact the number of copies of the print job performed by the user and may further include a special price for viewing a print job. The print log record may be exported to the client 102′ in any required file format such as comma separated format, space separated format, in text format or simply in binary format.

In the preferred embodiment of the present invention the user is, as described above, charged according to the number of pages the user prints, therefor the card issued to the user contains a maximum allowable number of printed pages. The number of printed pages for each card 132 is continuously monitored by the server 136 and the server 136 handles payments for the users printing or viewing of the print job. The price for performing a view or a print of a document may differ between users of the network in accordance to various agreements between the author of a document and the reader of that document e.g. in accordance with copyright agreements. Each specific user may at the front-end module 124 view his status account or credit and view printing costs for printing of the print job. If the specific user has no credit the server 136 will prevent the specific user from accessing the printing control system 100.

In addition to having general printers connected to the printing control system 100, the printing control system 100 further enables connecting copying machines to the LAN or WAN. The printing control system 100 tracks and logs copy clicks from copying machines when a user is identified at a copying machine. The documents in the job database 112 may be accessed at the copying machines by importing the documents to the copy machine in a variable file format.

The server 136 may be connected through a WAN to a plurality of servers and thus enable communication of print jobs and print log record information between the plurality of servers and the server 136. Thus the printing facilities provided by the server 136 is extended to the plurality of servers thereby introducing a safe wide printing control system for distribution of print jobs and cost of performing print jobs.

The client 102′ may according to preferred embodiment of the present invention be constituted by personal computers, computer workstations or in an alternative embodiment of the present invention constituted by a combination of personal computers, computer workstations and mobile communication clients such as a mobile phone or a mobile communicator. The connections provided in the printing control system 100 is constituted by connections such as current carrying cables and/or optical cables or in an alternative embodiment of the present invention by mobile radio transmission links or by any combination of current carrying cables, optical cables and mobile radio transmission links.

FIG. 3 shows a principle flow diagram designated in its entirety by numeral 200 and describing the operations of the printing control system according to the preferred embodiment of the present invention. The flow diagram 200 is shown as a sequentially evolving system for explanatory reasons only, the preferred embodiment of the present invention, however, provides a system performing parallel operations. Some operations are concurrently performed by the client 102′, the server 136 and by a printer communication unit constituting the control unit 120, the front end 124 and the card reader 130. The term parallel operation is in this context to be construed as performing concurrent operations, a multiple of operations simultaneously or as performing real time operations.

In block 202, shown in the flow diagram 200 a plurality of clients create a number of print job records at any time. The print job record consists of a data file or document or alternatively a pointer pointing to an address of the data file or document to be transferred to any designated user of the printing control system. The print job record further consists of a user file or header associated with the data file or document to be transferred through the printing control system, which user file or header includes information regarding users defined as designated users allowed access to the document, time during which the designated users are allowed access to the document and/or an address pointer to the document.

When the printing control system according to the preferred embodiment of the present invention transfers data from one unit or element to the next in the printing control system the data is transferred utilising secure networking procedures providing either symmetrical encryption and/or asymmetrical encryption. Thus the printing control system provides a safe communication between the plurality of clients and the designated users of the printing control system.

In block 204, the data file or document is spooled providing a document in a printer readable format. The spooling operation is performed at each client or in an alternative embodiment of the present invention at the server. Since in the preferred embodiment of the present invention the client performs the spooling operations a plurality of spooling operations may be performed simultaneously at each client.

As the data file or document is spooled the print job is transferred to the job database in block 206. The document is written to a document table and the user file or header is written to a user table, which document table and user table is described with reference to FIG. 2. In the printing control system according to an alternative embodiment of the present invention the user file or a header contains a pointer addressing the document in a storage medium at the client. The client provides the document to designated users of the printing control system upon request from a designated user. In this alternative embodiment the print job is written to the user table since the user file or header contains all necessary information for the printing control system to extract the document from the client.

In block 208, the server is notified of the existence of a print job transferred from any of the plurality of clients in the printing control system. Subsequently the server enters a waiting mode with respect to the particular print job shown as question block 210. The server waits for any user to request the particular print job at any printer connected in the printing control system. If a user performs a request for any print job at any of the printer communication unit connected in the printing control system, then the server initiates a verification of the requesting user shown as block 212 by correlating user log on information with user information stored in a server memory.

In block 214, the server determines whether the user should have access to the printing control system and provided the user log on information does not correspond with the user information stored in the server memory the user request is denied. Alternatively, the server transfers user options for the requesting user shown in block 216 to the printer communication unit. The user options provided to the requesting user vary for each requesting user in accordance with assigned options for each requesting user in the user table. The user options may be: List accessible print jobs, Select print job, View print job, Print print job, Show user account, Show number of pages of selected print job, Delete selected print job, Mark print job as not-deleteable, Display information about print job such information as duplex, simplex, colour, name, size, date, data-stream (PostScript, PDF, PCL, PCLXL, IPDS or AFP format), expiration data and End.

In block 218, the server waits for the requesting user to select one of the options provided to him. During this waiting session shown as block 218 the server performs alternative operations while continuously monitoring the printer communication unit for a selection. When the requesting user has selected which operations to perform the server initiates the user-defined operations at the first available possibility, shown in block 220. The operations may be performed by the printer communication unit or by any printer connected to the printer communication unit.

The selection made by the requesting user and the time for the request is written to a print log file during block 222. This operation may be performed subsequent to the requested tasks or concurrently to the requested tasks. Additionally, the server updates a user account in accordance with the selected operations and with a predefined price for the requesting user for the particular selected operations during block 224.

The server monitors the operations performed on each print job and sets a flag or provides a signal when the print job according to the user file or header associated with each print job is or rather should be concluded. In case the time in which the print job should remain accessible to the designated users of the printing control system according to the preferred embodiment of the present invention has expired the server sets the flag. In block 226, the printing control system performs a check for whether the flag is set by the server.

If the flag is set then the operations performed on the associated print job are terminated. If on the other hand the flag is not set then the printing control system continues to examine whether all designated users have accessed the print job, shown in block 228. In case not all designated users have accessed the print job the printing control system returns back to the questioning block 210. Alternatively the printing control system deletes the print job from the job database in block 230, notifies the server of the deletion of the print job in block 232 and terminates further operations on the print job in block 234.

EXAMPLE

The preferred embodiment will below be described with reference to an example implemented in accordance with the presently preferred specification.

Software Design Specification

General

This design specification describes the modules and interfaces used by the software components of the “SafeCom Accounting” system. The project is based on software, described as “SafeCom” software. Except if explicitly noted herein, all functionality and behavior implemented in “SafeCom” applies to “SafeCom Accounting”.

Abbreviations GUI Graphics User Interfaces TCP/IP Transmission Control Protocol/Internet Protocol LPR/LPD Line Printing/Line Printing Daemon SQL Structured Query Language UDP User Datagram Protocol SS SafeCom Server PE Print Engine JDB Job Database CU Control Unit FE Front End AdmGUI SafeCom Administration Tool Brief Product Description

The SafeCom product in itself concerns the implementation of a technique that ensures that a printed document is held until the designated receiver chooses to print it on the printer where she stands.

This project will improve the SafeCom product, with accounting capabilities based on the page-count of the physical printer. Moreover this project will implement two new mechanisms respectfully called “Billing” and “Distribution”. As a new facility, the install program will give the user opportunity to install a secure client for Win95 and Win98.

Configuration will still be maintained through the Win32 based administration GUI. It will be enhanced with capabilities of exporting data from the new accounting database, and performing simple data mining in the collected data. It should also be possible to import the user database from WinNT for easy administration of the SafeCom system, this last facility will be implemented if time permits it.

The AdmGui of “SafeCom Accounting” will be Win2000 compliant, all other components cannot be guaranteed to be Win2000 compliant.

Highlights:

-   -   Accounting using page-count of the physical printer     -   Export of data from SafeCom accounting database     -   Requires a professional accounting program, capable of viewing         the exported data     -   Supports Print-and-Pay by exporting data from the “SafeCom         Accounting” database. The solution requires a professional         accounting program, capable of viewing the exported data and         charging accordingly.     -   Supports Pay-and-Print via external dll loaded by “SafeCom         Accounting”. This solution also requires a professional         accounting program, which implements the dll. The dll is used to         retrieve credit information continuously from the accounting         program. The accounting program must be capable of monitoring         the credit rating of the customers as well as charging them         accordingly.     -   Secure client for Win95 and Win98     -   National language support for text shown on the LCD display of         the FE     -   Easy administration workload by importing users from Windows         user database.     -   Windows 2000 compatibility.     -   Simple data mining in Admin GUI.     -   Pay and Print Demo GUI.         Software Description

In order to implement the accounting system, a new accounting server has been developed in the SafeCom system. This is to manage a database which hold all the information needed for accounting. Thus the CU should be capable of reporting the number of pages printed on the physical printer to the accounting server via the SafeCom Server. Reference printers used during development will be HP 8100 and HP 4500 Color.

The two ways of which the accounting mechanism works is “Print and Pay” and “Pay and Print”:

Print and Pay

In this way, all information for accounting is maintained by the accounting server and stored in an accounting database. This is for the administrator to extract information and export it to a file, which will be the interface to an extern accounting application (not included in the SafeCom system). The exported data will be a comma separated file.

The following information is stored in the SafeCom accounting database:

key: ID when: Start time, End time who: User name, User login, Email where: Printer name, Printer Mac, Printer IP, Printer location what: Job name, Job attr (duplex, color, pages, format, copies), NumberOfCopies status: Open|Closed|Fixed, Total pages.

From the AdmGUI it will be possible to delete old entries which is not needed anymore.

Pay and Print

The “Pay and Print” functionality is dependant on an external application, capable of keeping track of resource cost of each printer, as well as providing the current credit level of all users. This application is not a part of the SafeCom system, but should include a special component (dll) with the following entry point functions:

-   -   StartAccounting(UserInfo, DocumentInfo, PrinterInfo,         Copies)→SessionID, OK|Abort, CreditsLeft     -   NotifyPagesPrinted(SessionID, PageCount)→OK|Abort, CreditsLeft     -   StopAccountng(SessionID)

SafeCom will call the above functions to obtain credit information. If ever a function return the “Abort” signal, the client will stop printing immediately.

However, SafeCom will still maintain it's own accounting database with information as in “Print and Pay”.

Demo Application for Pay and Print

Although the external application for Pay and Print is not included in this project, a very small program is made for demonstration only.

National Language Support

As mentioned in the requirement specification the national language support is for text shown on the LCD display only.

The supported languages will be English, Danish, German, French, Spanish and Italian. This means that the LCD display must be capable showing special national characters. A special code page is made for this purpose.

UNICODE is implemented in the server software, and a conversion therefore takes places before showing document titles on the LCD display. The conversion will take place in the Server Code.

Windows 2000 Compatibility

The installation program has to be changed for the SafeCom system to run on the windows 2000 platform. If other components needs to be coded specialy for win2000 will be tried out during development.

Module Description

Overview

In the following we will show a schematic draw (shown in FIG. 4) of all modules (excl. the Broadcast server) belonging to the SafeCom architecture including the Accounting server. Additionally the FIG. 4 will identify the different interfaces, binding the modules together.

All interfaces are shown as two sided arrows, one filled and one unfilled. The filled arrow indicates which end acts as the server end, thus indicating the direction of all requests belonging to the protocol. Interfaces marked with “*” include encryption facilities applied to the transport layer.

Changes for Accounting Project

This chapter describes the new accounting server modul and the changes in the existing SafeCom modules, if any.

SafeCom Control Unit

It is the Control Unit which start and stop the accounting process and report pages printed while the process is running.

The Control Unit should therefore be capable of detecting page boundaries while printing.

Also the Control Unit's code page is enhanced for national language support.

Front End

TBD (Accounting Messages)

SafeCom Server

The SafeCom Server is modified to hold connection with the new Accounting Server. This is to manage the accounting data from the Control Unit. It is designed to handle continuous information from the Control Unit while printing.

Job Database

The Job Database is enlarged with a printer table holding information about printers and there status. This will give the opportunity to implement “full job control” in the future.

Moreover, this version of the Job Database will create and maintain an activity log file, holding information about user creation, login fail, ect.

Print Engine

No changes.

AdmGUI (Scum)

These new features are discovered:

-   -   Make the Accounting Server export the accounting information.     -   Delete old entries from the accounting database.     -   Import of the Windows user database.     -   Simple data mining:         -   1. Create an overview of how many pages each user has             printed during a given time period.         -   2. Create an overview of the total numbers of pages printed             on the various printers.

Note: The AdmGUI is acting through the Scum module, however the data mining must take place locally in the AdmGUI.

Windows Spool (Port Monitor)

It will now be possible to install a secure client on Win95 and Win98 in order to encrypt document data while being transmitted to the SafeCom Server. The Port Monitor is changed for this purpose.

Install Program

The install program will upgrade old databases to the new version introducing new tables.

If InstallShield can create an install program which works on all platforms, only one install program is needed. Otherwise two install programs will be created. One for Win9x and Win NT 4.0, and one Win 2000.

Accounting Server

The Accounting Server manage all the input and output from the database, which hold the information needed for accounting.

It will be a Win32 based process, not necessary running on the same machine as the SafeCom Server. By request and replies, and through the TCP/IP protocol, it will communicate with the SafeCom Server and the Job Database in order to update the accounting database. Also it will be responsible to extract information from the accounting database and export it to a file.

Interface Description

Requests and Replies

This section describes all interfaces with respect to which requests and replies they consist of.

Interface 1—SCFE Protocol

The purpose of the “SafeCom Front End” protocol is to make it possible for the control unit to send and receive information from/to the front end. This includes notifications about key pad events and card reader events as well as methods used to control of the LCD display.

Interface 2—SafeCom Server

The SafeCom server interface provides methods for login, and enumeration of owned documents in the database. Also the interface holds requests and replies used for identification purposes: One request/reply pair is used to identify the SafeCom server and another pair is used to identify the printer attached to the front-end unit. With “SafeCom Accounting” interfaces for accounting is added.

Note: The SafeCom Server is kind of a control channel.

Interface 3—Job Database

The job database interface provides methods for log in, enumeration of owned documents, user administration and identification . With “SafeCom Accounting” interfaces for accounitng is added.

Interface 4—Print Engine

The print engine interface provides methods for login, enumeration, and retrieval of owned documents. While retrieving data, the client can send a request that cancels the upload action.

Note: Print channel.

Interface 5—Native Windows

The SafeCom system does not modify the client machine submitting documents in any way. Normally the windows spooler uses a proprietary format transferred using NetBeui. It is however possible to use other protocols such as the TCP/IP based LPR/LPD protocol.

A detailed description of this interface is therefore not needed in this document.

Interface 6—Native Printer

When the SafeCom control unit sends data to the printer, it will be done using a parallel cable. Formally the transport protocol is called “Centronics”. The data transferred is not formatted in any manner, it is just RAW data. An specification of PIN assignments and their use will not be supplied here.

Interface 7—Accounting Server

The Accounting Server interface provides methods for login, starting and stopping the accounting process, and to recieve printing information continuously from the Control Unit via the SafeCom Server.

Broadcast Server

The Broadcast Server is used to identify which Safecom components are running on the network. It also holds methods to configurate the SafeCom components.

EXAMPLES Example Printing a Document

User prints one document, using “print and pay”, and leaves, as shown in FIG. 5.

Example Connecting

FIG. 6 shows how SetDeviceInfo and NotifyPrinterIRQ are used.

Requirement Specification

General

Abbreviations SS SafeCom Server PE Print Engine JDB Job Database CU Control Unit FE Front End AS Accounting Server AdmGui SafeCom Administration Tool Brief Product Description

This document describes the requirements to the project “SafeCom Accounting”. The project is based on the product described as “SafeCom”. Except if explicitly noted herein, all functionality and behavior implemented in “SafeCom” applies to “SafeCom Accounting”.

The different components of “SafeCom Accounting” will run on the following platforms.

WinNT 4.0 at Service Pack 4+ Win95 Win98 Win2000 Server Software X — — X AdmGui X X X X Secure Client X X X X with billing dialog and Distribution dialog. Highlights

-   -   Accounting using page-count of the physical printer. Reference         printers used during development will be HP 8100, HP 4500 Color         and Lexmark 2455/3455     -   Page count will be implemented both in hardware and in software.         The hardware will obtain page count information by issuing PJL         commands at the beginning and the end of each printed job.         Postscript capable printers will be queried for page-count         information, by embedding a postscript application capable of         reporting back to the control unit. The software will obtain         page count information by scanning the submitted data. The         software will be capable of understanding the following data         streams: PCL, PS, PCL-XL. Naturally the accounting-server will         log how the page-count was obtained. Typically hardware         page-count will be weighted above software page-count. The         control unit decides which page count is to be used for each         individual job.     -   Supports Print-and-Pay by exporting data from the “SafeCom         Accounting” database. The solution requires a professional         accounting program, capable of viewing the exported data and         charging accordingly.     -   Secure client for Win98 and Win95     -   The software can install and run under Windows 2000. There will         be no support for remote client installations, MMC management         etc. The software can simply be installed using the same install         program as for WinNT 4.0.     -   Simple data mining in Admin GUI     -   Billing dialog shown on client machine at print submission time.     -   Distribution dialog shown on client machine at print submission         time. The distribution dialog will enable a user to ‘mail’ a         document to other people. As added feature the submitter can         specify a interval in time where the document will exist         (document lifetime). This can be used to make a document appear         at a specified time and to ensure that the document expires (is         deleted) at some other point in time.         Software Description

The main ambition of the “SafeCom Accounting” project is to improve “SafeCom” with tracking capabilities. Tracking requires that the CU is capable of counting the actual number of pages printed on the physical-printing device. Subsequently, the CU must report pages printed to the SafeCom Server, so the person printing the document, can be charged accordingly.

The tracking mechanism implemented is this version of SafeCom Accounting is also known as “Print and Pay”.

Print and Pay

Users using the “Print and Pay” mechanism, will be charged at some time after the actual printing is performed. “SafeCom Accounting” merely keeps track of how many pages the user is printing. This information can be exported to a file and imported into a professional accounting system capable of creating invoices. Since an invoice typically needs some degree of detail information, we have chosen to log almost everything we know about each printed job (se description of the “accounting table” below)

Since this is not a design document, we will ignore details about how the page information is handled by the server software. The end result will however be, that the server software maintains a table in its database with entries for all printed jobs. Each entry holds information about:

-   -   Who printed the job     -   Where the document was printed (on which printer)     -   Printer classification tag (used to categorize printers in         different pricing groups)     -   When it was printed     -   Properties of the job itself (duplex, pages, copies, etc.)     -   Job Status (Job is being printed , Job successfully printed, Job         aborted during printing)     -   Billing info (A configurable string chosen by the client at         submission time).

The entries in the accounting table are never automatically deleted from the database. It will be possible through the AdmGui to delete old entries from the accounting table. The deleted entries will be serialized to disc before deletion. This makes it possible to query the database for historical information.

Billing Mechanism

Customers have requested a mechanism, where the client is forced to tag each print job with one of several configurable categories. The AdmGui must be able to configure different categories for each user. This will enable the customers to keep track of which category a printed document is printed in combination with, which is a feature that enables the customers to keep track of for example a projects use of paper.

The secure client, who is in charge of displaying the dialog, will need to retrieve all categories available to the user, before displaying the billing dialog.

It must be configurable whether the billing dialog is to be displayed or not. The most flexible approach is to control this from the AdmGui, and let the information flow to the secure client when it tries to retrieve a users-list of categories.

Creation and assignment of categories are performed centrally using the AdmGui The billing system will use the users network login as user authentication scheme.

Print Distribution Mechanism

Customers have requested a mechanism than enables a client to distribute the same document to more than one user. This is achieved by displaying a window at print submission time, where the document author can select between different distribution groups (mailing lists). After selection the document will be sent to all individuals of the selected group.

To avoid flooding of the job database, the document data itself, will be kept in one incarnation only. Each user receiving the document will in reality only own a “reference” to the document, which can be deleted without any impact on the other users. Only when the last user referring the job, has deleted the job reference, will the physical document data be removed from the harddisk.

Conceptually a job always has one job author (being the user that submitted the job) and several job owners. The owners can print the job and chose to delete or retain their reference. Deletion of references simply means just that. A job will be deleted from the system only if all references have been deleted.

Configuration of distribution groups is done using the AdmGui. Also, the AdmGui makes it possible to assign the various distribution groups to different users. When a user is distributing jobs, she will be allowed only to distribute to those groups that have been assigned to her.

When a user summits a document she can specify an interval in time, where the document exists. This interval defines the lifetime of the document. A document will appear in its owner's queue, as soon as the current date-time lies within the document lifetime interval. When the document expires in lifetime it will be deleted from the system.

Transmission Performance Optimization

All server components in “SafeCom Accounting” uses the “SafeCom Secure TCP/IP” protocol for communication—even if they reside on the same machine. This is not optimal, since there is no need to encrypt data between inter-process boundaries. Also, the TCP protocol itself is very slow compared to dedicated inter process communication algorithms. SafeCom Accounting will use an improved version of the “SafeCom Secure TCP/IP” communication protocol, which use secure TCP/IP between processes on different machines and fast inter-process communication between processes on the same machine.

Configuration

Upgrade Old Databases to New Versions Directly From Installer

New versions of SafeCom introduce new tables in the database. It is required that the installation program is capable of upgrading an existing database to the new format.

Administration

Just like SafeCom the “SafeCom Accounting” project will be administered using the AdmGui. New functionality is the ability to:

-   -   Export data from the accounting table to a file that can be         interpreted by other products.     -   Perform simple data mining in the collected data.     -   Define new billing categories and assign them to users.     -   The AdmGui will enable the user to specify an email mask used         when creating new users. The idea is that if the administrator         enters the email mask “@i-data.com” then all new users will be         assigned the email address “user Id@i-data.com” automatically.         Export Functionality

It will be possible to export data from the accounting table to a file that can be interpreted by other products. To maximize integration ease we will use a data format that is immediately readable by most database tools (ODBC file, comma-separated file, or similar.) The exported data will initially be exported to a comma-separated file. If time permits it we will implement other export formats.

Along with the exported data, will be a so-called schema file. The schema file documents all exported fields with respect to their individual name and data type. The format of the schema file will be the format demanded by the Delphi TTable component. This will ensure, that the Admin GUI can immediately import the exported data (no need for writing a scanner, parser etc.).

The electronic manual will have a section that describes the format of the exported data. The section will include an example that describes how to import the exported data into Microsoft Excel or Microsoft Access.

Simple Data Mining

“SafeCom Accounting” always maintains the accounting table. It is therefore possible to use the AdmGui to perform simple data mining in the collected data. The AdmGui will display the following statistical information.

-   -   1. An overview of how many pages each user has printed during a         given time period     -   2. An overview of the total number of pages printed on the         various printers     -   3. An overview of how many print jobs that is accounted to each         defined category. The overview must include the total amount of         printed pages for the given category.

As in all window programs it will be possible to print the graphs to the Microsoft spooling system.

Billing Categories

When submitting print to “SafeCom Accounting”, the client will be presented with a dialog prompting for a category assignment. The categories shown are only those categories that have been assigned to the user. Creation and assignment of categories are performed in the AdmGui.

Distribution Groups

It will be possible to create new distribution groups and assign them to users. The users of the system can distribute to those groups that have been assigned to them. It is also possible to enable/disable distribution for each user. This has no impact on the lists assigned to the users. If distribution is disabled, the distribution dialog will simply not be shown to the user at print submission time.

Hardware and Software Environments

Secure Clients for Win9x

The port monitor will be ported to Win9x, to enable secure submission of document data. In order to make a client machine SafeCom capable, it will be necessary to install the software from the CD-ROM.

Windows 2000

All components in SafeCom Accounting will be Win2000 compliant. This does not imply that SafeCom is ready for Win2000 certification. The software can be installed using the NT4.0 installer and it can be configured and executed exactly like on an NT 4.0 system. Missing for full Win2000 integration is MMC management (Microsoft Management Console), Remote client installation, full UNICODE support (NLS) etc. .

Backward Compatibility

The new server software will be able to service old clients (GA version). This includes old control units as well as old secure clients. Jobs printed from front-ends running old GA-firmware will not be able to report hardware page-count information back to the servers. Instead the servers will use the calculated software page-count information for jobs printed on the old devices.

It is of course highly recommended that the users quickly port their installation to the new software level. However, since this can take several days -it is essential that the system also functions during the transition period.

Since some of the control units will be updated with new firmware, it is important that the control units function on both old and new servers.

SafeCom Unit Description

The SafeCom Unit consists of a “Front End” as well as a “Control Unit”.

The front end is equipped with a touch sensible LCD display, and a magnetic card reader. Basically the Front End functions as the users terminal at the printer. From a hardware point of view, the Front End used in the “SafeCom Accounting” project is identical to the one used in the “SafeCom” project.

The control unit used could theoretically be any i-data print server that is equipped with a RS-232 interface. The “SafeCom Accounting” project in its first version will use the “EasyCom Xpress” unit as print server.

During the months following the release of SafeCom, we have received requests from customers asking for various small changes, which would make the system user-friendlier. The following list enumerates those changes that will be implemented as a direct consequence of the requests.

-   -   During installation the user is sometimes required to edit a         list of IP broadcast masks. This is difficult to do, since         practically all our users have no clue as to what a broadcast         mask is. As solution the “Front End” will show a hint stating         that the user can enter the IP address of the “SafeCom Server”         instead.     -   The “retain” option does not function as expected, as the         documents lose their “retained” state, after the user exists her         session on the “Front End”. Also, when displaying the list of         jobs, it would be nice to be able to see which documents are         retained and which are not.     -   When discovering the various SafeCom servers, multiple server         entries appear for the same installation. This is confusing and         will be avoided by changing the identify mechanism implemented         in the servers.         Hardware Description

No hardware changes are necessary.

Mechanical Description

N/A

Electronic Description

N/A

Configuration

N/A

Quality Consideration

N/A

Specifications

N/A

Test Specification

Reporting

The following reports are required:

-   -   BPT report     -   DVT-A Report     -   DVT-B Report

Reporting will be done using incident reports

Pass/Fail Criteria

The pass criteria for DVT:

-   -   No severity 1 or 2 incidents with status Open, verified     -   Less than 10 severity 3 incidents with status Open, verified.         Test Area

The DVT test will focus on the following areas:

Test of the SafeCom SW on the NT Server

-   -   Installation     -   Usage of GUI     -   Security     -   Stress

Test of the SafeCom Control Unit

-   -   Installation,     -   Boot plus micro code upgrade     -   Configuration,     -   Multiple SafeCom Control Units     -   Error recovery

Test of the SafeCom Front End Unit

-   -   Usage     -   Micro code upgrade     -   Error recovery

Test of Usability of SafeCom System

-   -   Performance of SafeCom system     -   Test of the reliability of the page detection algorithm         Test Environments

The test will be done in the environments listed underneath:

NT 4.0 Server Server code, Port Monitor, AdmGui Win95 Port Monitor, AdmGui Win98 Port Monitor, AdmGui Win2000 AdmGui

Various Microsoft NT file systems will be used

-   -   NTFS     -   FAT

Various Printers e.g. HP 8100, HP 4500 Color and Lexmark 2455/3455

Safecom Accounting

General

Intent

All users currently running SafeCom could (and should) upgrade their SafeCom version. The reason is that we have made significant improvements in overall system performance as well as to the auto configuration mechanisms used.

It is possible to create two versions of the new SafeCom version—one with and one without accounting support. There are currently no plans of doing this; instead we plan for one release featuring all new functionality.

Availability

SafeCom Accounting is made available for sales late Q1 year 2000. The project itself is estimated to exit DVT 18/02-2000. This means that the GA date will be approximately a month from this date. This depends on the length of the alpha and beta test periods as well as the time it takes to produce the final CD-ROM.

Compatibility

During installation the product will check for an older version, and if located it will upgrade the old version in such a way that no data is lost. This applies to the old configuration data as well as to the old job data and user data.

The product will be able to work with print servers running old SafeCom firmware. In this case the hardware page-count normally propagated back to the servers will be unavailable, and a software page-count generated at submission time will be used.

Headlines

-   -   Distribution (enabling users to distribute jobs to one or more         users at print submission time)     -   Billing (forcing users to tag documents at print submission         time)     -   Tracking (tracking documents as they are printed—pages, printer,         user, time, date, billing info)         Abstract

SafeCom Accounting is a new version of SafeCom that supersedes the old SafeCom versions. The version enables the user to track resource usage, and to export the tracking data to a comma-separated file. The format of the exported material is readable by spreadsheet programs like Microsoft Excel. The configuration program used to configure SafeCom (the AdmGui), has been enhanced with functionality, that enables the user to perform data mining on the exported material.

The different views are:

-   -   Total print usage for each user     -   Total print usage for each printer     -   Total print usage for each billing category

Billing is a mechanism that enables the user to tag a print job at submission time. The tag will follow the document until it is deleted. Each time a user prints the document, the tracking system will log information about the document, the user, the time of day and among other things the billing tag. The data-mining module therefor has all needed information available for generating summaries over the total print usage for each billing category.

New is also a mechanism enabling a user, to submit a printed document to other users of the system. The mechanism is called ‘distribution’ and it allows the Administrator to configure various distribution lists, and assign these to users of the system. When a user submits a document she will be presented with a dialog prompting for information about who is to receive the document.

Details

Accounting/Tracking

As the name “SafeCom Accounting” implies, we have weighted accounting abilities really high, when we defined this new version. The ambition was to create a mechanism that would enable SafeCom to continually keep track of page use. Once you start implementing this, you realize that the task is more complicated than you would think. The problem lies in establishing a reliable means of obtaining a page-count information.

The solution to the problem is twofold.

-   -   1. When data is submitted to the SafeCom database, the         submitting application (the port monitor) analyses the         data-stream, and generates an estimate as to the number of pages         in the job. This page-count (called the software page-count) is         passed along with the job and placed in the database. The         data-streams, recognized by the port monitor, are PCL, PCL-XL         and PostScript.     -   2. When data is printed, the SafeCom hardware (the control unit)         will use various methods to retrieve a page count from the         physical printer. There are several techniques used, although         the most important is to have the control unit issue PJL         commands before and after each job. Since not all printers         support PJL, we are working on an alternative mechanism, where a         PostScript program is submitted to the printer, and made         responsible for reporting page count information back to the         control unit.

SafeCom Accounting tracks down a broad range of information. The idea is to collect as much relevant information as possible, and use the information later on, when we need it for data-mining purposes. We only store static information, and purposely leave out policy dependant things like the price of a job. As a rule of thumb, one can say that we store information that can be measured in exact units and leave out information that can be deducted from the stored information. This approach gives us a tremendous advantage, when it comes to implementing new accounting strategies, new graphs, etc.

The information stored is as follows:

Base information Date, StartTime, EndTime, Copies, TotalPages- HW/SW, State (Job_Started, Job_Completed, Job_Interupted) User information UserName, Email Printer/Print server MAC, PrinterName, IP-Addr, Location, information DeviceModel, ColorSupported Job information Job name, JobIsDuplex, JobIsColor, DeviceDriverUsed Billing information Client Name, Account Billing Mechanism

In some organizations it is desirable to enable or force the users to categorize jobs at submission time. Such information can be used afterwards to calculate prices or to analyze the collected data. As an example the billing functionality could be used to force each submitting user to select which “project” a print job should belong to. The user would be shown a dialog when trying to print, and prompted to select one of the listed of project numbers, before the document was printed.

The AdminiGui of SafeCom Accounting will enable the administrator to create new billing categories and assign them to one of more users. A billing category is an ordered pair of respectfully a Client Name and an account. An examplary configuration could be as follows:

Client Account Assigned users Microsoft 3443 324252 Brian, Mark Microsoft 5675 324253 Brian Microsoft 3453 899976 Brian i-data Printing 102.304/11 Mark Systems i-data Printing 102.304/12 Brian, Mark Systems i-data Printing 102.272/11 Joe, Brian, Mark Systems Distribution Mechanism

The distribution mechanism enables a user to submit a print job to a group of users. Since this means placing documents in other peoples private queues, it is possible to configure which users have this privilege.

The Administrator of SafeCom can use the AdmGui to define distribution lists (each containing one or more users). After this is done, the Administrator can assign users the right to distribute jobs to these lists. This means that it isn't possible for the user, to create a new distribution list at submission time. Only the pre-defined lists can be chosen from.

When submitting a document to others, it really means submitting a reference to a document to a user. The physical data represented is thus not copied again and again since this would flood the hard disk of the server machine. SafeCom keeps track of when to delete the physical data, naturally as long as someone references the job, the physical data stays on the hard disk.

General Issues

SafeCom Accounting uses an improved version of the SafeCom communications protocol. The structures, passed around by the protocol, have basically been strengthened with new fields, including fields meant for future expansion purposes. This means that we can create new SafeCom releases without significantly changing the protocol, which is a major advantage.

We have made major changes to the discovery method used by the various system components when they need to locate each other. As before we use an UDP network frame, to request responses from the other components. The change lies in the responses, where we among other things send back a list of all TCP/IP addresses assigned to the component. Earlier we just sent back the network address that the request was received on. The advantage is, that all replies from a component will be identical (they all send back the same list). A client receiving the response can thus iterate through the list until it locates an entry that it has a route to. This may seem like an insignificant change, but it actually means, that the discovery mechanism is many times more reliable than before.

The one reason why the first release of SafeCom was rather slow was, that we used TCP/IP as a means of inter-process communication (communication between components running on the same server machine). TCP/IP is really annoying when it is used locally, as it spends most of the CPU time, waiting for an event that never occurs. The reason why it does this is a bit complicated, but can shortly be explained as follows: When a packet is to be transmitted it is split up in smaller chunks. Each of these is sent to the receiver in separate network frames. Since the last frame is usually only partially used, it makes sense to examine if there is more data that is to be sent. When used locally, the TCP/IP protocol waits for about 200 ms for this to happen, until it finally times out and sends the frame. In SafeCom there never is any extra data to send, which means that the TCP/IP protocol wasted 200 ms each time it needed to send data from one point to another. To circumvent this, we use new communications protocol for local connections. The protocol is called “LocalPipe” and it performs really well. The performance gain from this change has been measured in average to about 10 times faster than before.

Software Design Specification for “Interfaces”

General

This part describes the interfaces that are offered by the SafeCom system inclusive accounting. The following interfaces are described:

-   -   JobDatabase interface     -   PrintEngine interface     -   SafeCom Server interface     -   BroadcastServer interface     -   Accounting Server interface

Each interface is described by command, followed by arguments, and the replies to the command. Finally the security level for the command. The security level is divided into three levels. Lowest is User, second is PowerUser and above all is the Administrator. When a security level is denoted it means that level and above.

The first part gives a description of definitions. After this section is given an overview of the five interfaces described in this document. Then the common requests and replies among the interfaces are described. Finally the server specific requests and replies are described.

Interface History

All transaction-elements have a version field, used to identify which interface version the request or reply belongs to. The following table summarizes existing interface versions.

Interface Product Project version Name Number S-number 1 SafeCom 102.304/11 070.010 2 SafeCom Accounting 102.304/11    070.030*nn Type Definition StructType

The element type can be:

Name Value Comment stFaktura 1 stUser 2 DeviceInfoStruct2

Length Field Comment 4 m_nStructLength Length of struct 2 m_nVersion Version Number (set to 2) 2 m_nSubVersion Version of achReserved (set to 0) 6 m_achDeviceMAC¹ 6 byte MAC address of device 4 m_nDeviceIpAddr 4 byte IP Address of device 2 m_nDeviceStatus Ready(0), InterventionRequried(1) 4 m_achDeviceStatus- Bitfield (See below) Description 2 m_nDuplex Does device support Duplex? Yes(1), No(0) 2 m_nColor Does device support Color? Yes(1), No(0) 8 m_fPricePrPage Price pr page printed 4 m_nSupportedPaper- A4 (1), A3 (2), LETTER (4), Types TBD (>2{circumflex over ( )}2) 2 m_nNumberOfFormats Number of elements in Format list 32  m_achReserved Reserved for protocol extensions (zero padded) + m_szDeviceName Name of Device. Must be unique for devices on same MAC + m_szLocation Free format string defining location of device + {Format2}* wrapped by m_achData DeviceStatusDescription

Placement in array Status - Yes(1), No(0) Byte 0-Bit 7 Printing Byte 0-Bit 6 MemoryShortage Byte 0-Bit 5 PaperOut Byte 0-Bit 4 PaperJam Byte 0-Bit 3 TonerOut Byte 0-Bit 2 DeviceOffline Byte 0-Bit 1 0 Byte 0-Bit 0 0 Byte 1-Byte 3 0 ¹A printer uniquely identified by its MAC and DeviceName

Length Field Comment Format2 for source and target 4 m_nStructLength Length of the struct including this field 2 m_nVersion Version Number (set to 2) 2 m_nSubVersion Version of achReserved (set to 0) 4 IformatType PCL4 (1), PCL5 (2), IPDS (3), PS (4), ICDS (5), SPECIAL (6) 8 m_achReserved Reserved for protocol extensions (zero padded) + SzSpecialFormat Describes the format if iFormat=SPECIAL FakturaInfoStructV2 4 m_nStructLength Length of the struct including this field 2 m_nVersion Version Number (set to 2) 2 m_nSubVersion Version of achReserved (set to 0) 2 m_nStructType stFaktura 4 m_nBillingId Unique id of this billing entry 4 m_nBillingNid Unique node id of this billing entry 2 m_nlsGroup 32  m_achReserved Reserved for protocol extensions (zero padded) + szClient Description + szAccount Name IdentifyStruct2 4 m_nStructLength Length of the struct including this field 2 m_iVersion Version Number (set to 2) 2 m_nSubVersion Version of achReserved (set to 0) 2 m_nlpPort 4 m_nType Bitfield defining server type 0×01: Print Engine 0×02: SafeCom Server 0×04: Port Monitor 0×08: Job Database 0×10: Accounting Server 8 m_ach Reserved Reserved for protocol extensions (zero padded) JobInfoStruct2 4 m_nStructLength Length of the struct including this field 2 m_nVersion Version Number (set to 2) 2 m_nSubVersion Version of achReserved (set to 0) 4 m_nJobId Unique id identifying the job 4 m_nBillingId Unique id for entry in billing table 4 m_nGroupNid 4 m_nSize Size of document 4 m_nPages Pages in document 2 m_nDuplex YES(1), NO(0) 2 m_nColor YES(1), NO(0) 21  m_szOwner UserLogon of job owner (zero terminated). Owning a job means having the job in ones print queue) 21  m_szAuthor UserLogon of job author (zero terminated). The author is the user that submitted the job into the job database. 8 m_achDate Submission date of entry in the job database (dd-mm-yyyy) 6 m_achTime Submission time of entry in the job database (hh-mm-ss) 8 m_achLifeStartDate The job is accessible by it's owners from this date-time and forward. (dd-mm-yyyy) 6 m_achLifeStartTime (hh-mm-ss) 8 m_achLifeStopDate The job is accessible by it's owners until this date-time is reached. The job is then deleted. (dd-mm-yyyy) 6 m_achLifeStopTime (hh-mm-ss) 2 m_nDestroyAfterFirstDe- lete 4 m_nAccountingTag Reserved for later use 2 m_bRetained Retained(0), Not retained(1) 32  m_achReserved Reserved for protocol extensions (zero padded) + Format2 Document Format + szJobName Title of document + szPageFormat Page Format as String PrintJobInfoStruct2 4 m_nStructLength Length of the struct including this field 2 m_nVersion Version Number (set to 2) 2 m_nSubVersion Version of achReserved (set to 0) 4 m_nJobId Unique id identifying the job 4 m_nBillingId Unique id for entry in billing table 4 m_nGroupNid 1 m_uchPrintable YES(1), NO(0) 4 m_nDocumentSize Size of document in bytes 4 m_nPages Pages in document 2 m_nDuplex YES(1), NO(0) 2 m_nColor YES(1), NO(0) 8 m_achDate The date of entry in the job database (dd-mm-yyyy) 6 m_achTime The time of entry in the job database (hh-mm-ss) 8 m_achLifeStartDate The job is accessible by it's owners from this date-time and forward. (dd-mm-yyyy) 6 m_achLifeStartTime (hh-mm-ss) 8 m_achLifeStopDate The job is accessible by it's owners until this date-time is reached. The job is then deleted. (dd-mm-yyyy) 6 m_achLifeStopTime (hh-mm-ss) 21  m_szOwner The user logon name that submitted the job 21  m_szAuthor UserLogon of job author (zero terminated). The author is the user that submitted the job into the job database. 2 m_nDestroyAfterFirstDe- lete 4 m_nAccountingTag Reserved for later use 2 m_bRetained Retained(0), Not retained(1) 2 m_nNumberOfTargetFor- Number of Target Formats in list mats below 32  m_achReserved Reserved for protocol extensions (zero padded) + Format2 Source Format + {Format2}* List of possible target formats + szJobName Job Title + szPageFormat Page Format as String UserInfoStruct2 4 m_nStructLength Length of the struct including this field 2 m_nVersion Version Number (set to 2) 2 m_nSubVersion Version of achReserved (set to 0) 2 m_nStructType stUser 4 m_nUserId Unique id identifying the user 4 m_nUserNid Unique node Id of user 2 m_nlsGroup YES(1) | NO(0) 2 m_nGroupEnabled 21  m_szUserLogon Asc-ii string identifying the user 17  m_szPassword Asc-ii string password 40  m_szCardNo Card number 5 m_szPINCode PIN code - zero terminated 9 m_szPUKCode PUK code - zero terminated 2 m_nLogonFails Number of failed logins 2 m_bUserLocked Unlocked(0), Locked(1) 2 m_bAvoidPin Pin Enabled(0), Pin disabled(1) 2 m_bCardOpen PIN code assigned(0), Awaiting pin assignment/ Outstanding PUK(1) 8 m_fAccount Credits left for the user 2 m_nBillingModel None(0), (1)BillingDialog 1 2 m_nAccountingModel None(0), PrintAndPay(1), PayAndPrint(2) 32  m_achPermissionFlags An array of chars, each describing actions that a user has permission to perform. The table below shows which actions the individual bytes associate to. 32  m_achReserved Reserved for protocol extensions (zero padded) + szFullName wrapped by m_achData + szDescription wrapped by m_achData + szEMail wrapped by m_achData Permission Bit-Field Assignment

Placement in array Request Byte 0 canActAsUser Byte 1 canSubmitJob Byte 2 canRetrieveJob Byte 3 canAdministrateUsers Byte 4 canAdministrateAccounting Byte 5 canAdministrateBilling Byte 6 canAccounting Byte 7 canBilling Byte 8 canConfig Byte 9 canAdministrateNids Byte 10  CanGetUserInfoList Byte 11  CanChangePinCode Byte 12  CanDeleteJob Byte 3-31 Unused (set to 0)

The following requests can be issued without being logged in and thus requires no permission flags: GetDeviceInfo, SetDeviceInfo, NotifyDeviceIrq, GetPrinters, GetPrintEngine

Interfaces—Overview

If a server receives data that cannot be recognized as one of the requests below, it will return an UnknownReply with status SC_UNKNOWN_REQUEST. If the server receives a newer version of a known command than it can handle, it will return an UnknownReply with status SC_UNSUPPORTED_VERSION.

SafeCom Server SafeCom Server Se- (Common curity Commands) Arguments Reply Level LoginByCardNo CardNo×PinCode Status, U² UserInfoStruct2 LoginByUserLogon UserLogon×Pass- Status, A,PU word UserInfoStruct2 Logoff None Status U ChangePINCode NewPINCode Status U DeleteJob JobId Status U SetPrintJobInfo JobId× Status U PrintJobInfoStruct2 OpenCard CardNo×PUKCode× Status —³ PINCode UpdateFrom- — — — Registry GetPrinters Status,{szDevice- — Driver Names}+ GetPrintEngine SourceFormat× Status, — TargetFormat {PE-IpAddr}, PE- IpPort SetDeviceInfo {DeviceInfoStruct2}+ Status, — SenseCode GetDeviceInfo Status, — SenseCode,{Device- InfoStruct2}+ NotifyDeviceIrq {Device InfoStruct2}+ Status, — SenseCode StartAccounting JobId × Status, U PageCountModel × SenseCode, NumberOfCopies × SessionID, DeviceInfoStruct2 CreditsLeft NotifyPagesPrinted SessionID × Status, U DeltaPageCount SenseCode, CreditsLeft StopAccounting SessionID Status, U SenseCode ²This login request cannot be used to obtain Administrator or Power User privileges. Only LoginByUserLogon will do this. If an Administrator logs in by card number, she will be granted access to the system with user privileges only. ³It is always possible to issue this request even if not logged on.

SafeCom Server (Spec. Always Security Commands) Arguments Reply Encrypted Level GetPrintJobInfoList None NoJobs × No U {Printjob- InfoStruct2}* Job Database Job Database Sec- (Common urity Commands) Arguments Reply Level LoginByCardNo CardNo×PinCode Status, U⁴ UserInfoStruct2 LoginByUserLogon UserLogon×Password Status, A,PU UserInfoStruct2 Logoff None Status U ChangePINCode NewPINCode Status U OpenCard CardNo×PUKCode× Status U PINCode StartGetJob JobId×TargetFormat FileHandle U GetJobData FileHandle × Length Length × Data U CancelGetJob FileHandle Status U DeleteJob JobId Status U SetJobInfo JobId×JobInfoStruct2 Status U UpdateFromRegistry — — —⁵ GetPrinters Status,{szDevice- — Driver Names}+ SetDeviceInfo {DeviceInfoStruct2}+ Status, — SenseCode GetDeviceInfo Status, — SenseCode,{De- vice-Info- Struct2}+ NotifyDeviceIrq {DeviceInfoStruct2}+ Status, — SenseCode ⁴This login request cannot be used to obtain Administrator or Power User privileges. Only LoginByUserLogon will do this. If an Administrator logs in by card number, she will be granted access to the system with user privileges only.

Se- Job Database curity (Spec. Commands) Arguments Reply Level ValidUserByCardNo CardNo Status, UserId PU ValidUserByUser- UserLogon Status, UserId PU Logon StartAddJob JobInfoStruct2 Status, FileHandle U StartAddJobByUserId JobInfoStruct2 × Status, FileHandle U UserId AddJobData FileHandle×Size Status U of×Data CommitJob FileHandle Status U CancelAddJob FileHandle Status U GetJobInfoList None Status, NoJobs, U {JobInfoStruct2}+ GetJobInfoListBy- UserId Status, NoJobs, PU UserId {JobInfo-Struct2}+ GetUserInfo None UserInfoStruct2 U GetUserInfoList None NoUsers, A {UserInfoStruct2}+ A GetUserInfoByUserId UserId UserInfoStruct2 A DeleteUser UserId Status A AddUser UserInfoStruct2 Status A ModifyUser UserInfoStruct2 Status A AddPrinter szDeviceDriver- Status PU Name RemovePrinter szDeviceDriver- Status PU Name AddFaktura FakturaInfoStruct2 Status A ModifyFaktura FakturaInfoStruct2 Status A RemoveFaktura FakturaId Status A GetFakturas None Status× A NoFakturas× {FakturaInfoStr2}+ GetFakturaById NID FakturaInfoStruct2 U AllowUserToNid NID×NID Status A DenyUserFromNid NID×NID Status A GetUsersAllowed- NID {NID}+ A ToNid GetGraphByNid NID . . . U LinkNidToNid NID×NID Status A UnLinkNidFromNid NID×NID Status A ⁵It is always possible to issue this request even if not logged on. Configuration Parametres:

SMTP Server Address x.x.x.x Warning time mm-dd-yyyy hh:mm:ss Delete Time mm-dd-yyyy hh:mm:ss Sanity Check Time mm-dd-yyyy hh:mm:ss Email Warning 1 Enabled 0 Disabled MaxNoOfFailes x > 0 EnforceEncryption 1 Enabled 0 Disabled Print Engine

Print Engine Se- (Common curity Commands) Arguments Reply Level LoginByCardNo CardNo×PinCode Status, U⁶ UserInfoStruct2 LoginByUserLogon UserLogon×Password Status, A,PU UserInfoStruct2 Logoff None Status U GetPrintEngine SourceFormat× Status,{PE- — TargetFormat IpAddr}, PE- IpPort UpdateFromRegistry — — — StartGetJob JobId×TargetFormat FileHandle U GetJobData FileHandle × Length Length×Data U CancelGetJob FileHandle Status U ⁶This login request cannot be used to obtain Administrator or Power User privileges. Only LoginByUserLogon will do this. If an Administrator logs in by card number, she will be granted access to the system with user privileges only.

Print Engine (Spec. Security Commands) Arguments Reply Level GetTransformList None Number×{Transform}* U Broadcast Server

Broadcast Server Security (UDP Command) Arguments Reply Level Identify None Ip-Addresses and — port numbers for the various SafeCom components. SetBroadcastList {BroadCastAddress} none! — +, GroupName Note: UDP Requests must be sent as UDP packets on port 5742 (unencrypted)

Broadcast Server (Common Security Command) Arguments Reply Level LoginByUserLogon UserLogon×Password Status, A,PU UserInfoStruct2 Logoff None Status U

Broadcast Server Security (Spec. Command) Arguments Reply Level SetConfiguration Proprietary Win.ini Status A like format GetConfiguration None Proprietary Win.ini A like format Accounting Server

Accounting Server (Common Security Commands) Arguments Reply Level LoginByCardNo CardNoxPinCode Status, U⁷ UserInfoStruct2 LoginByUserLogon UserLogonx Status, A,PU Password UserInfoStruct2 Logoff None Status A StartAccounting JobId x Status, U NumberOfCopies x SenseCode, DeviceInfoStruct SessionID, DeviceInfoStruct2 CreditsLeft NotifyPagesPrinted SessionID x Status, U AbsPageCount x SenseCode, PageCountModel x CreditsLeft PageCountStatus x PageCountSense- Code x PageCount- Info StopAccounting SessionID Status, U SenseCode, CreditsLeft UpdateFromRegistry — — — ⁷This login request cannot be used to obtain Administrator or Power User privileges. Only LoginByUserLogon will do this. If an Administrator logs in by card number, she will be granted access to the system with user privileges only.

Accounting Server Security (Spec. Command) Arguments Reply Level ExportAccounting- StartDate, StopDate, Status, A Table Separator, Target SenseCode, URL ExportCount DeleteOldEntries DeleteBeforeDate, Status, A Target URL SenseCode, NumberDeleted Common Commands, Detailed UnknownReply

Reply Length Field Comment 4 NMessageLength Length of the message 4 Ecommand CI_UNKNOWN_REPLY 2 Nversion Version number (set to 2) 4 Ncorrelation Correlation to be returned by reply 2 Estatus SC_UNSUPPORTED_VERSION SC_UNKNOWN_REQUEST Comments

An UnknownReply will be returned if and only if an unsupported datastream is received as a request. An unsupported datastream is either a request with an unknown ‘Command’ field or an unsupported version of a defined request.

LoginByCardNo

Length Field Comment Request 4 NmessageLength Length of the message 4 Ecommand CI_LOGIN_BY_CARD_NO_REQUEST 2 Nversion Version number (set to 2) 4 Ncorrelation Correlation to be returned by reply 40  SzCardNumber The card number read on the SafeCom unit 5 SzPinCode The pin code read on the SafeCom unit Reply 4 NmessageLength Length of the message 4 ECommand CI_LOGIN_BY_CARD_NO_REPLY 2 Nversion Version number (set to 2) 4 Ncorrelation Correlation from Request 2 Estatus SC_SUCCESS SC_FAILURE + SuserInfoStruct2 Struct describing the user Comments This command can only give the client user rights to the job database. LoginByUserLogon

Length Field Comment Request 4 NmessageLength Length of the message 4 Ecommand CI_LOGIN_BY_USER_LOGON_REQUES T 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply 21  SzUserLogon The user logon 17  SzPassword User personal password Reply 4 NMessageLength Length of the message 4 ECommand CI_LOGIN_BY_USER_LOGON_REPLY 2 NVersion Version number (set to 2) 4 NCorrelation Correlation from Request 2 EStatus SC_SUCCESS SC_FAILURE + SUserInfoStruct2 Struct describing the user Comments None Logoff

Length Field Comment Request 4 NMessageLength Length of the message 4 eCommand CI_LOGOFF_REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply Reply 4 nMessageLength Length of the message 4 eCommand CI_LOGOFF_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 eStatus SC_SUCCESS SC_FAILURE Comments None StartGetJob

Length Field Comment Request 4 NMessageLength Length of the message 4 ECommand CI_START_GET_JOB_REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply 4 NJobId Get document associated with unique job id + SFormat2 Desired document format Reply 4 NMessageLength Length of the message 4 eCommand CI_START_GET_JOB_REPLY 2 NVersion Version number (set to 2) 4 NCorrelation Correlation from Request 2 EStatus SUCCESS (0) FAILURE (1) 4 NFileHandle Handle to File Comments GetJobData

Length Field Comment Request 4 NmessageLength Length of the message 4 Ecommand CI_GET_JOB_DATA_REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply 4 NFileHandle Handle to file 4 NSizeOf Size of data requested Reply 4 NMessageLength Length of the message 4 ECommand CI_GET_JOB_DATA_REPLY 2 NVersion Version number (set to 2) 4 NCorrelation Correlation from Request 2 EStatus SUCCESS (0) FAILURE (1) 4 NSizeOf Size of data to be transmitted + AchData Data Comments CancelGetJob

Length Field Comment Request 4 NMessageLength Length of the message 4 ECommand CI_CANCEL_GET_JOB_REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply 4 NFileHandle Handle to file Reply 4 NMessageLength Length of the message 4 ECommand CI_CANCEL_GET_JOB_REPLY 2 NVersion Version number (set to 2) 4 NCorrelation Correlation from Request 2 EStatus SUCCESS (0) FAILURE (1) DeleteJob

Length Field Comment Request 4 NMessageLength Length of the message 4 ECommand CI_DELETE_JOB_REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply 4 NUniqueIdJob The unique id of the job Reply 4 NMessageLength Length of the message 4 ECommand CI_DELETE_JOB_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 eStatus SC_SUCCESS SC_FAILURE SC_PENDING_DELETE Comments SC_PENDING_DELETE means that the job was in use by someone else, and will be deleted automatically by the Job Database as soon as it is released. GetPrintEngine

Length Field Comment Request 4 NMessageLength Length of the message 4 ECommand CI_GET_PRINT_ENGINE_REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply + SFormat2 Source format + SFormat2 Target format Reply 4 NMessageLength Length of the message 4 ECommand CI_GET_PRINT_ENGINE_REPLY 2 NVersion Version number (set to 2) 4 NCorrelation Correlation from Request 2 EStatus SC_SUCCESS SC_FAILURE 2 NPort The port number of the Print Engine 4 NNumberOfIpAddr Number of ip addresses in the list + {achIpAddr}* IP Addresses of the Print Engine Comments SetDeviceInfo

Length Field Comment Request 4 NMessageLength Length of the message 4 ECommand CI_SET_DEVICE_INFO_(—) REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply 4 NNumberOfDevices Entries in list below + {sDeviceInfoStruct2}+ Information about the device Reply 4 NMessageLength Length of the message 4 ECommand CI_SET_DEVICE_INFO_REPLY 2 NVersion Version number (set to 2) 4 NCorrelation Correlation from Request 2 EStatus SC_SUCCESS, SC_FAILURE 2 ESenseCode Ok(0) Comments: GetDeviceInfo

Length Field Comment Request 4 NMessageLength Length of the message 4 eCommand CI_GET_DEVICE_INFO_(—) REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply Reply 4 nMessageLength Length of the message 4 eCommand CI_GET_DEVICE_INFO_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 eStatus SC_SUCCESS, SC_FAILURE 2 eSenseCode Ok(0) 4 nNumberOfDevices Entries in list below + {sDeviceInfoStruct2}+ Information about the device Comments NotifyDeviceIrq

Length Field Comment Request 4 NmessageLength Length of the message 4 ECommand CI_NOTIFY_DEVICE_IRQ_(—) REQUEST 2 NVersion Version number 4 NCorrelation Correlation to be returned by reply 4 NNumberOfDevices Entries in list below + {sDeviceInfoStruct2}+ Information about the device Reply 4 NMessageLength Length of the message 4 ECommand CI_NOTIFY_DEVICE_IRQ_REPLY 2 NVersion Version number 4 NCorrelation Correlation from Request 2 EStatus SC_SUCCESS, SC_FAILURE 2 ESenseCode Ok(0) Comments ChangePinCode

Length Field Comment Request 4 NMessageLength Length of the message 4 eCommand CI_CHANGE_PIN_CODE_REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply 5 szNewPINCode Old pin has been entered again and new PIN, has been entered twice and checked Reply 4 nMessageLength Length of the message 4 eCommand CI_CHANGE_PIN_CODE_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 eStatus SC_SUCCESS, SC_FAILURE Comments OpenCard

Length Field Comment Request 4 NMessageLength Length of the message 4 ECommand CI_OPEN_CARD_REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply 40  SzCardNumber Card number to be opened 9 SzPUKCode Code authenticating the user 5 SzPINCode The users PINCode Reply 4 NMessageLength Length of the message 4 Ecommand CI_OPEN_CARD _REPLY 2 Nversion Version number (set to 2) 4 Ncorrelation Correlation from Request 2 Estatus SC_SUCCESS SC_FAILURE + SzMessage Message to the user Comments GetPrinters

Length Field Comment Request 4 NmessageLength Length of the message 4 ECommand CI_GET_PRINTERS_REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply Reply 4 NMessageLength Length of the message 4 ECommand CI_GET_PRINTERS_REPLY 2 NVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 EStatus SC_SUCCESS/SC_FAILURE 4 NSizeOfNames Length of the printer names list 4 NNumberOfNames Number of names in the list + {szPrinterNames} * A list of zero terminated printer names Comments All documents are tagged with the name of the device driver that generated it. This request is used to retrieve all device-driver-names in the database, so that the FE can display this list during configuration. StartAccounting

Length Field Comment Request 4 NMessageLength Length of the message 4 ECommand CI_START_ACCOUNTING_(—) REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply 4 NJobId JobId of job to be accounted 2 NNumberOfCopies Number of copies requested by user + SDeviceInfoStruct2 Information about the device Reply 4 NMessageLength Length of the message 4 ECommand CI_START_ACCOUNTING_REPLY 2 NVersion Version number (set to 2) 4 NCorrelation Correlation from Request 2 EStatus SC_SUCCESS/SC_FAILURE 2 ESenseCode Ok(0), Accounting NotSupported(1), Accounting NotEnabled ForUser(2) 4 NSessionID Unique id identifying the accounting session 8 NCreditsLeft (double) Credits for the user Comments AccountingNotSupported has higher precedence than Accounting NotEnabledForUser StopAccounting

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand CI_STOP_ACCOUNTING_(—) REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply 4 nSessionID Unique id identifying a session Reply 4 nMessageLength Length of the message 4 eCommand CI_STOP_ACCOUNTING_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 eStatus SC_SUCCESS/SC_FAILURE 2 eSenseCode Ok(0), UnknownSessionId(1) 8 nCreditsLeft (double) Credits for the user Comments NotifyPagesPrinted

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand CI_NOTIFY_PAGES_PRINTED_REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply 4 nSessionID Unique id identifying a session 4 nAbsPageCount Number of pages printed in total 2 nPageCountModel SW(0), HW(1) 4 nPageCountStatus 0(Ok), 1(Undefined), 2(Failure) 4 nPageCountSense- 0(Ok), 2(Failure), 3(PaperJam), Code 4(PaperOut), (5)ProbeError + szPageCountInfo Descriptive text (zero terminated) Reply 4 nMessageLength Length of the message 4 eCommand CI_NOTIFY_PAGES_PRINTED_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 eStatus SC_SUCCESS/SC_FAILURE 2 eSenseCode Ok(0), UnknownSessionId(1), CreditShortage(2) 8 nCreditsLeft Credits for the user Comments UpdateFromRegistry

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand CI_UPDATE_FROM_REGISTY_REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply Reply 4 nMessageLength Length of the message 4 eCommand CI_UPDATE_FROM_REGISTY_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 eStatus SC_SUCCESS, SC_FAILURE Comments Safecom Server—Specialized Commands, Detailed GetPrintJobInfoList

Length Field Comment Request 4 NMessageLength Length of the message 4 eCommand SS_GET_JOB_INFO_LIST_REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply Reply 4 nMessageLength Length of the message 4 eCommand SS_GET_JOB_INFO_LIST_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 eStatus SC_SUCCESS, SC_FAILURE 4 nNumberOfJobs Elements in list below + {sPrintJobInfoStruct2} Array of PrintJobInfoStructs + Comments GetPrintEngine (Comment) Comments

The task of this command is to supply the Control Unit with an address of a print engine that is capable of delivering the job in the right format. Since we do not yet have hardware independent format the target and document format are the same and the request will be to find any available print engine. By specifying source and taget format, we basically ask for a PrintEngine capable of transforming from one format to the other.

Job Database—Specialized Commands, Detailed

ValidUserByCardNo

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand JDB_VALIDATE_USER_BY_CARD_NO_REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply 40 szCardNo Card number read on the SafeCom unit - zero terminated Reply 4 nMessageLength Length of the message 4 eCommand JDB_VALIDATE_USER_BY_CARD_NO_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 eStatus USER_VALID USER_INVALID USER_IS_BLOCKED FAILURE 4 nUserId An unique id identifing the user Comments This command checks if a user with a specific card number exits in the database. Clients can only perform this command with a security level of Power User or Administrator. ValidUserByUserLogon

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand JDB_VALIDATE_USER_BY_USER_LOGON_REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply 21 szUserLogon Asc-ii user logon - zero terminated Reply 4 nMessageLength Length of the message 4 eCommand JDB_VALIDATE_USER_BY_USER_LOGON_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 eStatus USER_VALID USER_INVALID USER_IS_BLOCKED FAILURE 4 nUserId An unique id identifing the user Comments This command checks if a user with a specific user id exits in the database. Clients can only perform this command with a security level of Power User or Administrator. StartAddJob

Length Field Comment Request 4 NMessageLength Length of the message 4 eCommand JDB_START_ADD_JOB_REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply + sJobInfoStruct2 Information about job 4 Add. Data Length Length of additional data + Add. Data Additional data Reply 4 nMessageLength Length of the message 4 eCommand JDB_START_ADD_JOB_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 4 nFileHandle FileHandle for file Comments The job is added in the context of the user who has logged on. StartAddJobByUserId

Length Field Comment Request 4 NmessageLength Length of the message 4 ECommand JDB_START_ADD_JOB_BY_USER_ID_REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply 4 NUserId User indetification + SJobInfoStruct Information about job 2 4 Add. Data Length of additional data Length + Add. Data Additional data Reply 4 NMessageLength Length of the message 4 eCommand JDB_START_ADD_JOB_BY_USER_ID_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 4 nFileHandle FileHandle for file Comments The job is added using a unique user Id. AddJobData

Length Field Comment Request 4 NMessageLength Length of the message 4 ECommand JDB_ADD_JOB_DATA_REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply 4 NFilehandle Handle to file 4 NSizeOf Size of data + AchData Job data Reply 4 NMessageLength Length of the message 4 ECommand JDB_ADD_JOB⁻DATA_REPLY 2 NVersion Version number (set to 2) 4 NCorrelation Correlation from Request 2 EStatus Success/Failure Comments The doc data is sent in chunks with ctrl signal in between. The unique id returned by the command on success can be used in the job specific command in the interface. CommitJob

Length Field Comment Request 4 NMessageLength Length of the message 4 ECommand JDB_COMMIT_JOB_REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply 4 NFilehandle Handle to file 4 NPages Pages in print job ← WHY (RWB)? Reply 4 NMessageLength Length of the message 4 ECommand JDB_COMMIT_JOB_REPLY 2 NVersion Version number (set to 2) 4 NCorrelation Correlation from Request 2 EStatus Success/Failure Comments CancelAddJob

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand JDB_CANCEL_ADD_JOB_REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply 4 nFilehandle Handle to file Reply 4 nMessageLength Length of the message 4 eCommand JDB_CANCEL_ADD_JOB_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 eStatus Success/Failure Comments SetJobinfo

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand JDB_SET_JOB_INFO_REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply 4 nJobId The jobs unique id + sJobInfoStruct2 Struct with the new attributes Reply 4 nMessageLength Length of the message 4 eCommand JDB_SET_JOB_INFO_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 eStatus SUCCESS, FAILURE + szMessage Message for user if fail - zero terminated Comments GetJoblnfoList

Length Field Comment Request 4 NMessageLength Length of the message 4 ECommand JDB_GET_JOB_INFO_LIST_REQUEST 2 NVersion Version number (set to 2) 4 Ncorrelation Correlation to be returned by reply Reply 4 NmessageLength Length of the message 4 Ecommand JDB_GET_JOB_INFO_LIST_REPLY 2 Nversion Version number (set to 2) 4 Ncorrelation Correlation from Request 2 Estatus SC_SUCCESS, SC_FAILURE 4 NNumberOfJobs Elements in list below + {sJobInfoStruct2} + Job information Comments GetJoblnfoListByUserId

Length Field Comment Request 4 NMessageLength Length of the message 4 ECommand JDB_GET_JOB_INFO_LIST_BY_USER_ID _REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply 4 NUserId Users unique id Reply 4 NMessageLength Length of the message 4 ECommand JDB_GET_JOB_INFO_LIST_BY_USER_ID _REPLY 2 NVersion Version number (set to 2) 4 NCorrelation Correlation from Request 2 EStatus SC_SUCCESS, SC_FAILURE 4 NNoJobs The number of jobs struct + {sJobInfoStruct2} + Job information Comments GetUserInfo

Length Field Comment Request 4 NmessageLength Length of the message 4 ECommand JDB_GET_USER_INFO_REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply Reply 4 NMessageLength Length of the message 4 ECommand JDB_GET_USER_INFO_REPLY 2 NVersion Version number (set to 2) 4 NCorrelation Correlation from Request 2 eStatus SC_SUCCESS, SC_FAILURE + SUserInfoStruct2 Struct describing the user Comments This command gives a limited info about the user. GetUserInfoList

Length Field Comment Request 4 NMessageLength Length of the message 4 eCommand JDB_GET_USER_INFO_LIST_REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply Reply 4 nMessageLength Length of the message 4 eCommand JDB_GET_USER_INFO_LIST_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 eStatus SC_SUCCESS, SC_FAILURE 4 nNoUsers Number of users + {sUserinfoStruct2}+ Array of user info structs Comments This command is for Administrator only. GetUserInfoByUserId

Length Field Comment Request 4 Nmessage- Length of the message Length 4 ECommand JDB_GET_USER_INFO_BY_USER_ID_ REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply 4 NUserId Unique id of a user Reply 4 NMessage Length of the message Length 4 ECommand JDB_GET_USER_INFO_BY_USER_ID_REPLY 2 NVersion Version number (set to 2) 4 NCorrelation Correlation from Request 2 EStatus SC_SUCCESS, SC_FAILURE + SUserInfoStruct Struct describing the user 2 Comments This command is for Administrator only. DeleteUser

Length Field Comment Request 4 NMessageLength Length of the message 4 ECommand JDB_DELETE_USER_REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply 4 NUserId Unique id of the user Reply 4 nMessageLength Length of the message 4 eCommand JDB_DELETE_USER_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 eStatus SC_SUCCESS, SC_FAILURE Comments This command is for Administrator only. AddUser

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand JDB_ADD_USER_REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply + sUserInfoStruct2 Struct describing user info Reply 4 nMessageLength Length of the message 4 eCommand JDB_ADD_USER_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 eStatus SUCCESS FAILURE USER_NAME_EXITS USER_CARDNO_EXITS Comments This command is for Administrator only. ModifyUser

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand JDB_MODIFY_USER_REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply + sUserInfoStruct2 Struct describing user info Reply 4 NMessageLength Length of the message 4 ECommand JDB_MODIFY_USER_REPLY 2 NVersion Version number (set to 2) 4 NCorrelation Correlation from Request 2 eStatus SC_SUCCES, SC_FAILURE Comments This command is for Administrator only. AddPrinter

Length Field Comment Request 4 NMessageLength Length of the message 4 ECommand JDB_ADD_PRINTER_REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply + SzPrinterName Zero terminated string describing the printername Reply 4 NMessageLength Length of the message 4 ECommand JDB_ADD_PRINTER_REPLY 2 NVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 sStatus SC_SUCCES, SC_FAILURE Comments This command is an open command. RemovePrinter

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand JDB_REMOVE_PRINTER_REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply + szPrinterName Zero terminated string describing the printername Reply 4 nMessageLength Length of the message 4 eCommand JDB_REMOVE_PRINTER_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 eStatus SC_SUCCES, SC_FAILURE Comments This command is an open command. AddFaktura

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand JDB_ADD_FAKTURA_REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply + FakturaInfoStruct2 Faktura info struct to add Reply 4 nMessageLength Length of the message 4 eCommand JDB_ ADD_FAKTURA_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 sStatus SC_SUCCES, SC_FAILURE Comments ModifyFaktura

Length Field Comment Request 4 NMessageLength Length of the message 4 ECommand JDB_MODIFY_FAKTURA_REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply + FakturaInfoStruct2 Faktura info struct to modify Reply 4 NMessageLength Length of the message 4 ECommand JDB_MODIFY_FAKTURA_REPLY 2 NVersion Version number (set to 2) 4 NCorrelation Correlation from Request 2 sStatus SC_SUCCES, SC_FAILURE Comments RemoveFaktura

Length Field Comment Request 4 NMessageLength Length of the message 4 ECommand JDB_REMOVE_FAKTURA_REQUEST 2 NVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply 4 FakturaId Faktura id to remove Reply 4 nMessageLength Length of the message 4 eCommand JDB_REMOVE_FAKTURA_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 sStatus SC_SUCCES, SC_FAILURE Comments GetFakturaList

Length Field Comment Request 4 NMessageLength Length of the message 4 ECommand JDB_GET_FAKTURA_LIST_(—) REQUEST 2 NVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply Reply 4 nMessageLength Length of the message 4 eCommand JDB_GET_FAKTURA_LIST_(—) REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 sStatus SC_SUCCES SC_FAILURE 4 nFakturaNo Number faktura info structs in list + {FakturaInfoStruct2}+ List of faktura info structs Comments GetFakturaById

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand JDB_GET_FAKTURA_BY_ID_(—) REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply 4 FakturaId Faktura id Reply 4 nMessageLength Length of the message 4 eCommand JDB_GET_FAKTURA_BY_ID_(—) REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 sStatus SC_SUCCES, SC_FAILURE + FakturaInfoStruct2 Faktura info struct Comments AllowUserToNid

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand JDB_ALLOW_USER_TO_NID_(—) REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply 4 UserNID User unique node id to allow to NID 4 NID Node Id Reply 4 nMessageLength Length of the message 4 eCommand JDB_ALLOW_USER_TO_NID_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 sStatus SC_SUCCES, SC_FAILURE Comments DenyUserFromNid

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand JDB_DENY_USER_FROM_NID_(—) REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply 4 UserNID User unique node id to remove from NID 4 NID Node id Reply 4 nMessageLength Length of the message 4 eCommand JDB_DENY_USER_FROM_NID_(—) REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 sStatus SC_SUCCES, SC_FAILURE Comments GetUsersAllowedToNid

Length Field Comment Request 4 NMessageLength Length of the message 4 ECommand JDB_GET_USER_ALLOWS_NID_(—) REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply 4 MD Node Id Reply 4 nMessageLength Length of the message 4 eCommand JDB_GET_USERS_ALLOW_NID _(—) REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 sStatus SC_SUCCES, SC_FAILURE 4 nNidNo Number of nids in list + {NID}+ List of nids Comments GetGraphByNid

Length Field Comment Request 4 NMessageLength Length of the message 4 ECommand JDB_GET_GRAPH_BY_NID_(—) REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply 4 NID Node Id Reply 4 NMessageLength Length of the message 4 ECommand JDB_GET_GRAPH_BY_NID _(—) REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 sStatus SC_SUCCES, SC_FAILURE + Graph Recursive list of Safecom structs Comments LinkNidToNid

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand JDB_LINK_NID_TO_NID_REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply 4 NID Node id 4 NID Node id Reply 4 nMessage Length Length of the message 4 eCommand JDB_LINK_NID_TO_NID_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 sStatus SC_SUCCES, SC_FAILURE Comments UnLinkNidToNid

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand JDB_UNLINK_NID_TO_NID_RE- QUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply 4 NID Node id 4 NID Node id Reply 4 nMessageLength Length of the message 4 eCommand JDB_UNLINK_NID_TO_NID_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 sStatus SC_SUCCES, SC_FAILURE Comments Print Engine—Specialized Commands, Detailed GetTransformList

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand PE_GET_TRANSFORM_LIST_RE- QUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply Reply 4 nMessageLength Length of the message 4 eCommand PE_GET_TRANSFORM_LIST_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 eStatus SC_SUCCESS, SC_FAILURE 4 nNumber of transforms + {sFormat2 × {SourceFormat×TargetFormat}+ sFormat2}+ Comments Accounting Server—Specialized Commands, Detailed ExportAccountingTable

Length Field Comment Request 4 NMessageLength Length of the message 4 Command EXPORT_ACCOUNTING_DATA_RE- QUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply 1 CSeparator Separator character in exported dataset 16  AchStartDate⁸ Export accounting info from this date (SYSTEMTIME structure) 16  AchStopDate Export accounting info up to this date (SYSTEMTIME structure) + SzTargetURL File name incl. drive and path Reply 4 BMessageLength Length of the message 4 eCommand EXPORT_ACCOUNTING_DATA_RE- PLY 2 nVersion Version number (set to 2) 4 bCorrelation Correlation from Request 2 eStatus SC_SUCCESS, SC_FAILURE 2 eSenseCode Ok(0), AccountingNotSupported(1) 4 nExportCount Number of exported entries Comments DeleteOldEntries

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand DELETE_OLD_ENTRIES_RE- QUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply 16  achDeleteBeforeDate (SYSTEMTIME structure) Reply 4 NMessageLength Length of the message 4 eCommand DELETE_OLD_ENTRIES_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 eStatus SC_SUCCESS, SC_FAILURE 2 eSenseCode Ok(0), Accounting NotSupported 4 nNumberDeleted Number removed from database Comments ⁸If the start or stop date is filled with zeroes it means “all data” in the respective direction. Broadcast Server—Specialized Commands, Detailed Identify [UDP]

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand BS_IDENTIFY_REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply 4 achMask Bitfield defining search criteria 0x01: Print Engine 0x02: SafeCom Server 0x04: Port Monitor 0x08: Job Database 0x10: Accounting Server 20 szGroup String telling which groups that's going to be identified. If empty (ie “”) its identify all group. Reply 4 nMessageLength Length of the message 4 eCommand BS_IDENTIFY_REPLY 2 nVersion Version number (set to 2) 4 nCorrelation Correlation from Request 2 eStatus SC_SUCCESS, SC_FAILURE 6 achMAC 20  szGroupName 15  szSNumber ie “S42 069.020*02” 4 m_nNum- Number of entries in IP-ADDR list (addrs) berOfIpAddrs 4 m_nNum- Number of Servers in the server list berOfIden- tify-Structs + m_achlpAddrs Sequence of 4byte ip-addrs (dotted quad) + {sIdentifyStruct2}+ List of server-types & port-numbers SetBroadCastList [UDP]

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand BS_BROADCAST_LIST_REQUEST 2 nVersion Version number (set to 2) 4 nCorrelation Correlation to be returned by reply 2 achAppendToList 0- Delete the old list and use this list 1- If this show be appended to the old list 4 nNumberOfMasks Number of elements in list + {BroadCastAd- BroadCastAddress is an 4 bytes integer dress}* denoting the IP broadcast address + szGroup Zero terminated string containing group name for the broadcast servers that are to be updated. If group is an empty string, all Broadcast servers are updated. Reply (Currently this reply is not sent, since we have no use for it. It is defined here for expansion reasons only) 4 NMessageLength Length of the message 4 ECommand BS_BROADCAST_LIST_REPLY 2 NVersion Version number (set to 2) 4 NCorrelation Correlation from Request 2 EStatus SC_SUCCESS, SC_FAILURE Comments NOT SENT BY THE BROADCAST SERVER WHEN A SetBroadcastList- REQUEST IS RECEIVED! SetConfiguration

Length Field Comment Request 4 nMessageLength Length of the message 4 eCommand CI_SET_CONFIGURATION_REQUEST 2 nVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply + SzCfgData Zero terminated ASCII data Reply 4 NMessageLength Length of the message 4 ECommand CI_SET_CONFIGURATION_REPLY 2 NVersion Version number (set to 2) 4 NCorrelation Correlation from Request 2 EStatus SC_SUCCESS, SC_FAILURE + SzSyntaxCheck Zero terminated ASCII data containing result of syntax check performed on received configuration data. Comments This command is available after the user has successfully logged in, also, the request will fail if the CanGetConfiguration-attribute in the database is set to “No”. In its default setting the database only permits the Administrator (UID 0), to perform this action. The request will always be sent in encrypted form GetConfiguration

Length Field Comment Request 4 NMessageLength Length of the message 4 ECommand CI_GET_CONFIGURATION_REQUEST 2 NVersion Version number (set to 2) 4 NCorrelation Correlation to be returned by reply Reply 4 NMessageLength Length of the message 4 ECommand CI_GET_CONFIGURATION_REPLY 2 NVersion Version number (set to 2) 4 NCorrelation Correlation from Request 2 EStatus SC_SUCCESS, SC_FAILURE + SzCfgData Zero terminated ASCII data, holding the current configuration the Win32 Servers Comments This command is available after the user has successfully logged in, also, the request will fail if the CanGetConfiguration-attribute in the database is set to “No”. In its default setting the database only permits the Administrator (UID 0), to perform this action. The request will always be sent in encrypted form.

Billing

Introduction

This document describes the billing concept in different aspects, including using SafeCom in a public area (ex in a library).

The basic principle of billing is to tag a print job with additional data at submission time. These data could, for a lawyer point of view, be which client to bill the print job to. In other companies it could be which project the print job should be billed to.

Client Side

The client will, every time he prints, see a dialog shown in FIG. 7 asking him what account to bill the print job to. The accounts that will be presented to the client are collected from the server.

FIG. 7 gives an impression of the dialog that is presented to the client. As seen there are fields to identify the user. This will be optional and the way the user should identify himself is also configurable from the server. There are the following login possibilities:

-   -   Userid and password,     -   Card reader and pin     -   Network login.

The reason why it should be possible to configure login is that you can have public accessible computers where the user doesn't need to login to use the computer. So the only possible way to get the user information is at print time.

In areas like libraries billing info will not be needed, and the dialog can be configured not to show the billing info. Items not shown:

A search possibility in the client dialog should be implemented which allow fast access for large billing info. It will also be possible to let the dialog remember the last selection. (Pass through print can also be selected here).

Server

The server holds the list or the tree of billing info that the client can access at print time. It would be necessary to have access-rights on the billing info, because in some firms they don't want all employees to know all possible accounts. The list or tree of billing info will be customizable, except for a fixed billing info called personal (not shown above).

The assigning of access rights implicates a need for creating groups of users with different access rights, so in large organization it would be easy to assign access rights to the billing info.

On the server each user shall have an attribute describing the login procedure for submitting print jobs.

User login attribute: Network, card, password.

Printing and Data Extracting

Printing and collecting accounting info will be done in same way as described in the RS. The only difference is the billing info, which will appear in the accounting database. 

1. A printing control system for ensuring one or more users of a network (such as a LAN: local area network, or a WAN: wide area network) secure access to a print job designated to said one or more users of said network, and said printing control system comprising: (a) a client station of a first plurality of client stations for designating said print job to said one or more users, said print job defining a document containing user readable information and defining a header containing document access information, (b) a spool connected to said client station for spooling of said document and substituting said document in said print job with a spooled document, (c) a job database connected to said spool for receiving said spooled document and said header from said client station, said job database defining a document table and a user table and storing said spooled document in said document table and storing said header in said user table, (d) a printer communication unit of a second plurality of printer communication units for receiving user identifying data input by said one or more users to said printer communication unit said printer communication unit comprising a front-end module for identifying said one or more users of said network and a control unit for providing an interface for a print engine and a server to a printer, said front end module comprising an iris scanner and/or a fingerprint reader for identifying said one or more users at said front-end module and/or a card reader for reading card information from a card such as a credit card, a library card, a health insurance card, a driving licence card, a passport card, a membership card, a company identity card or an institutional identity card, said card information including information such as card user name, card user ID, card user credit, card user's access rights, card user's server address, card user identifying number, card issuing date, card identity number, digital signature of one or more of said client station of said first plurality of client stations or any combination thereof, and wherein said card utilizes electronic storage techniques, electro-magnetic storage techniques, magnetic storage techniques, magneto-optic storage techniques, optic storage techniques or any combination thereof for storing of said card information, (e) a server managed by a network administrator and interconnecting said printer communication unit to said job database for establishing said one or more users in said user table enabling said one or more users access to said network, for validating said one or more users on the basis of said user identifying data input to said printer communication unit against user information stored in said user table, and for ensuring said user identifying data and said user information provide said one or more users access to said spooled document, (f) a printer connected to said printer communication unit for receiving said spooled document from said job database and having a request input for receiving a print request from said one or more users and communicating said print request to said server, and (g) a print engine interconnecting said job database and said printer communication unit for compiling of said spooled document to be communicated to said printer through said printer communication unit, said print engine receiving said spooled document from said document table in said job database.
 2. A printing control system according to claim 1, wherein said network is established by bus connections, by cable connections such as current carrying cables and/or optical cables, by wireless links such as mobile radio transmission links, infra-red transmission links or ultra-sonic transmission links, or by any combination thereof.
 3. A printing control system according to claim 1, wherein said document is constituted by a file configured in any binary format such as text format, comma or space separated variable format or any user or software defined format.
 4. A printing control system according to claim 1, wherein each of said first plurality of client stations comprise a local memory, a display, a keyboard and preferably a local central processing unit such as constituted by personal computers, computer workstations and/or such as constituted by mobile communication clients like mobile phones or mobile communicators or any combinations thereof.
 5. A printing control system according to claim 1, wherein said spool spools said document according to a data stream format such as to PostScript, PDF, IPDS, PCL, PCLXL or AFP format.
 6. A printing control system according to claim 1, wherein said printing control system establishing a secure network by utilising secure networking procedures providing symmetrical and/or asymmetrical encryption in accordance with public and/or private encryption keys.
 7. A printing control system according to claim 1, wherein said spool incorporates a port monitor for parsing said spooled document in order to determine data stream format such as PostScript, PDF, IPDS, PCL, PCLXL or AFP format, and further to determine print formats such as simplex, duplex, colour, page size, page rotation, tray, stapling, and number of pages said spooled document will constitute during printing of said spooled document.
 8. A printing control system according to claim 1, wherein said job database is established on a memory storage unit accessible by said server such as magnetic storable hard disk, magnetic storable tape and/or magneto-optic storage disks on said server and having said user table and said document table allocated in storage spaces on said memory storage unit.
 9. A printing control system according to claim 8, wherein said user table allocates a record space in said memory storage unit for said header, and said document table allocates a storage space in said memory storage unit for said spooled document.
 10. A printing control system according to claim 8, wherein said user table allocates a record space in said memory storage unit for said header, and said document table allocates a storage spaced in said memory storage unit for a pointer to said spooled document on said local memory of said client station or in said document table.
 11. A printing control system according to claim 1, wherein said header contains information such as information regarding data stream format such as PostScript, PDF, IPDS, PCL, PCLXL or AFP format, print formats such as simplex, duplex, colour, page size, page rotation, tray, stapling, number of pages of said spooled document, access for said one or more users to said spooled document, a digital client signature, duration in which said one or more users is allowed access to said spooled document, and number of pages defined by said spooled document or any combination thereof.
 12. A printing control system according to claim 1, wherein said server incorporates said spool, said job database and said print engine in a server memory.
 13. A printing control system according to claim 1, wherein said front-end module comprises a display for showing said one or more users accessible print jobs and operations menus, and comprises a keypad for providing an interface between said one or more users and said front-end.
 14. A printing control system according to claim 13, wherein said display utilising cathode-ray tube screen techniques or said display utilising liquid crystal display techniques.
 15. A printing control system according to claim 13, wherein said keypad is constituted by a general personal computer keyboard, a numerical keypad or a functional keypad.
 16. A printing control system according to claim 13, wherein said keypad is constituted by a touch sensitive film mounted on said display so as to allow said one or more users to perform user operations by pressing said touch sensitive film in accordance with information showed on said display.
 17. A printing control system according to claim 1, wherein said control unit communicates with said front-end module and said printer through a parallel connection, a serial connection, a local area network (LAN) connection, a wireless connection such as a mobile radio transmission connection, an infra-red transmission connection or an ultra-sonic transmission connection, or any combination thereof.
 18. A printing control system for ensuring one or more users of a network (such as a LAN: local area network, or a WAN: wide area network) secure access to a print job designated to said one or more users of said network, and said printing control system comprising: (a) a client station of a first plurality of client stations for designating said print job to said one or more users, said print job defining a document containing user readable information and defining a header containing document access information, (b) a spool connected to said client station for spooling of said document and substituting said document in said print job with a spooled document, (c) a job database connected to said spool for receiving said spooled document and said header from said client station, said job database defining a document table and a user table and storing said spooled document in said document table and storing said header in said user table, (d) a printer communication unit of a second plurality of printer communication units for receiving user identifying data input by said one or more users to said printer communication unit, said printer communication unit comprising a front-end module for identifying said one or more users of said network and a control unit for providing an interface for a print engine and a server to a printer, said front end module comprising an iris scanner and/or a fingerprint reader for identifying said one or more users at said front-end module and/or a card reader for reading card information from a card such as a credit card, a library card, a health insurance card, a driving licence card, a passport card, a membership card, a company identity card or an institutional identity card, said card information including information such as card user name, card user ID, card user credit, card user's access rights, card user's server address, card user identifying number, card issuing date, card identity number, digital signature of one or more of said client station of said first plurality of client stations or any combination thereof, wherein said user identifying data includes said card information and a first user pin code and wherein said user information stored in said user table includes system user name, system user ID, system user credit, system user's access rights, system user's server address, system user identifying number, system user PUK code, system user initiation date or any combination thereof, and a second user pin code, (e) a server managed by a network administrator and interconnecting said printer communication unit to said job database for establishing said one or more users in said user table enabling said one or more users access to said network, for validating said one or more users on the basis of said user identifying data input to said printer communication unit against user information stored in said user table, and for ensuring said user identifying data and said user information provide said one or more users access to said spooled document, (f) a printer connected to said printer communication unit for receiving said spooled document from said job database and having a request input for receiving a print request from said one or more users and communicating said print request to said server, and (g) a print engine interconnecting said job database and said printer communication unit for compiling of said spooled document to be communicated to said printer through said printer communication unit, said print engine receiving said spooled document from said document table in said job database.
 19. A printing control system for ensuring one or more users of a network (such as a LAN: local area network, or a WAN: wide area network) secure access to a print job designated to said one or more users of said network, and said printing control system comprising: (a) a client station of a first plurality of client stations for designating said print job to said one or more users, said print job defining a document containing user readable information and defining a header containing document access information, (b) a spool connected to said client station for spooling of said document and substituting said document in said print job with a spooled document, (c) a job database connected to said spool for receiving said spooled document and said header from said client station, said job database defining a document table and a user table and storing said spooled document in said document table and storing said header in said user table, (d) a printer communication unit of a second plurality of printer communication units for receiving user identifying data input by said one or more users to said printer communication unit, said printer communication unit comprising a front-end module for identifying said one or more users of said network and a control unit for providing an interface for a print engine and a server to a printer, said front end module comprising an iris scanner and/or a fingerprint reader for identifying said one or more users at said front-end module and/or a card reader for reading card information from a card such as a credit card, a library card, a health insurance card, a driving licence card, a passport card, a membership card, a company identity card or an institutional identity card, said card information including information such as card user name, card user ID, card user credit, card user's access rights, card user's server address, card user identifying number, card issuing date, card identity number, digital signature of one or more of said client station of said first plurality of client stations or any combination thereof, wherein said card reader receives said card information from said card and communicates said card information to said server and said front-end module requests a first user pin code from said one or more users, (e) a server managed by a network administrator and interconnecting said printer communication unit to said job database for establishing said one or more users in said user table enabling said one or more users access to said network, for validating said one or more users on the basis of said user identifying data input to said printer communication unit against user information stored in said user table, and for ensuring said user identifying data and said user information provide said one or more users access to said spooled document, (f) a printer connected to said printer communication unit for receiving said spooled document from said job database and having a request input for receiving a print request from said one or more users and communicating said print request to said server, and (g) a print engine interconnecting said job database and said printer communication unit for compiling of said spooled document to be communicated to said printer through said printer communication unit, said print engine receiving said spooled document from said document table in said job database.
 20. A printing control system for ensuring one or more users of a network (such as a LAN: local area network, or a WAN: wide area network) secure access to a print job designated to said one or more users of said network, and said printing control system comprising: (a) a client station of a first plurality of client stations for designating said print job to said one or more users, said print job defining a document containing user readable information and defining a header containing document access information, (b) a spool connected to said client station for spooling of said document and substituting said document in said print job with a spooled document, (c) a job database connected to said spool for receiving said spooled document and said header from said client station, said job database defining a document table and a user table and storing said spooled document in said document table and storing said header in said user table, (d) a printer communication unit of a second plurality of printer communication units for receiving user identifying data input by said one or more users to said printer communication unit, said printer communication unit comprising a front-end module for identifying said one or more users of said network and a control unit for providing an interface for a print engine and a server to a printer, said front end module comprising an iris scanner and/or a fingerprint reader for identifying said one or more users at said front-end module and/or a card reader for reading card information from a card such as a credit card, a library card, a health insurance card, a driving licence card, a passport card, a membership card, a company identity card or an institutional identity card, said card information including information such as card user name, card user ID, card user credit, card user's access rights, card users server address, card user identifying number, card issuing date, card identity number, digital signature of one or more of said client station of said first plurality of client stations or any combination thereof, (e) a server managed by a network administrator and interconnecting said printer communication unit to said job database for establishing said one or more users in said user table enabling said one or more users access to said network, for validating said one or more users on the basis of said user identifying data input to said printer communication unit against user information stored in said user table, and for ensuring said user identifying data and said user information provide said one or more users access to said spooled document, wherein said server establishes and validates said one or more users by identifying said user information in said user table on the basis of said user identifying data and by matching said first pin code with said second pin code or alternatively during first use of said card by matching said system user PUK code with an entered user PUK code and said server locating in said document table all print jobs designated for said one or more users and communicating titles of all print jobs designated for said one or more users to said front-end display enabling said one or more users to select a print job or a multiplicity of print jobs, (f) a printer connected to said printer communication unit for receiving said spooled document from said job database and having a request input for receiving a print request from said one or more users and communicating said print request to said server, and (g) a print engine interconnecting said job database and said printer communication unit for compiling of said spooled document to be communicated to said printer through said printer communication unit, said print engine receiving said spooled document from said document table in said job database.
 21. A printing control system according to claim 1, wherein said server receives a print job selection from said one or more users at said front-end module and said server providing said one or more users access to said spooled document in said document table in said job database upon validation of said user identifying data.
 22. A printing control system for ensuring one or more users of a network (such as a LAN: local area network, or a WAN: wide area network) secure access to a print job designated to said one or more users of said network, and said printing control system comprising: (a) a client station of a first plurality of client stations for designating said print job to said one or more users, said print job defining a document containing user readable information and defining a header containing document access information, (b) a spool connected to said client station for spooling of said document and substituting said document in said print job with a spooled document, (c) a job database connected to said spool for receiving said spooled document and said header from said client station, said job database defining a document table and a user table and storing said spooled document in said document table and storing said header in said user table, (d) a printer communication unit of a second plurality of printer communication units for receiving user identifying data input by said one or more users to said printer communication unit, said printer communication unit comprising a front-end module for identifying said one or more users of said network and a control unit for providing an interface for a print engine and a server to a printer, said front-end module comprising a display for showing said one or more users accessible print jobs and operations menus, and comprising a keypad for providing an interface between said one or more users and said front-end module, (e) a server managed by a network administrator and interconnecting said printer communication unit to said job database for establishing said one or more users in said user table enabling said one or more users access to said network, for validating said one or more users on the basis of said user identifying data input to said printer communication unit against user information stored in said user table, and for ensuring said user identifying data and said user information provide said one or more users access to said spooled document, (f) a printer connected to said printer communication unit for receiving said spooled document from said job database and having a request input for receiving a print request from said one or more users and communicating said print request to said server, (g) a print engine interconnecting said job database and said printer communication unit for compiling of said spooled document to be communicated to said printer through said printer communication unit, said print engine receiving said spooled document from said document table in said job database, and wherein said server provides an opportunity for said one or more users to delete said spooled document from said one or more users' print job list, determine desired number of copies required of said spooled document, retaining printing of said spooled document in a draft version for a first price, view said spooled document on said display for a second price, print said spooled document on said printer for a third price and terminate further operations on said front-end module.
 23. A printing control system according to claim 22, wherein said server deducts said credit of said one or more users of a first amount equal to said first price if said one or more users prints a draft version of said spooled document, a second amount equal to said second price if said one or more users views said spooled document and a third amount equal to said third price if said one or more users prints said spooled document, or said server establishing a client credit record for each of said client stations designating said one or more users deducts said client credit record of a first amount equal to said first price if said one or more users prints a draft version of said spooled document, a second amount equal to said second price if said one or more users views said spooled document and a third amount equal to said third price if said one or more users prints said spooled document.
 24. A printing control system according to claim 1, wherein said printer communication unit is constituted by a personal computer, a work station, a mobile communicator or a mobile phone. 